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161037406488 = 23373130921161
BaseRepresentation
bin1001010111111010010…
…0111101000100011000
3120101122222021212011110
42111332210331010120
510114301034001423
6201551330300320
714430441240630
oct2257644750430
9511588255143
10161037406488
1162328465aa2
12272631276a0
131225517300a
147b195db6c0
1542c7aac193
hex257e93d118

161037406488 has 64 divisors (see below), whose sum is σ = 474949048320. Its totient is φ = 44526470400.

The previous prime is 161037406483. The next prime is 161037406501. The reversal of 161037406488 is 884604730161.

161037406488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161037406483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15455373 + ... + 15465788.

It is an arithmetic number, because the mean of its divisors is an integer number (7421078880).

Almost surely, 2161037406488 is an apocalyptic number.

It is an amenable number.

161037406488 is an abundant number, since it is smaller than the sum of its proper divisors (313911641832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161037406488 is a wasteful number, since it uses less digits than its factorization.

161037406488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30921208 (or 30921204 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 161037406488 in words is "one hundred sixty-one billion, thirty-seven million, four hundred six thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 31 42 56 62 84 93 124 168 186 217 248 372 434 651 744 868 1302 1736 2604 5208 30921161 61842322 92763483 123684644 185526966 216448127 247369288 371053932 432896254 649344381 742107864 865792508 958555991 1298688762 1731585016 1917111982 2597377524 2875667973 3834223964 5194755048 5751335946 6709891937 7668447928 11502671892 13419783874 20129675811 23005343784 26839567748 40259351622 53679135496 80518703244 161037406488