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161070505607 = 1118973771769
BaseRepresentation
bin1001011000000010001…
…1001101111010000111
3120101202021120110121202
42112000203031322013
510114333022134412
6201554511533115
714431322464544
oct2260043157207
9511667513552
10161070505607
1162345112940
122727222a19b
131225bc917ab
147b1db75bcb
1542ca9493c2
hex25808cde87

161070505607 has 8 divisors (see below), whose sum is σ = 175722767760. Its totient is φ = 146419824960.

The previous prime is 161070505567. The next prime is 161070505613. The reversal of 161070505607 is 706505070161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161070505607 - 210 = 161070504583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161070505507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177182 + ... + 594587.

It is an arithmetic number, because the mean of its divisors is an integer number (21965345970).

Almost surely, 2161070505607 is an apocalyptic number.

161070505607 is a deficient number, since it is larger than the sum of its proper divisors (14652262153).

161070505607 is a wasteful number, since it uses less digits than its factorization.

161070505607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790753.

The product of its (nonzero) digits is 44100, while the sum is 38.

Adding to 161070505607 its reverse (706505070161), we get a palindrome (867575575768).

The spelling of 161070505607 in words is "one hundred sixty-one billion, seventy million, five hundred five thousand, six hundred seven".

Divisors: 1 11 18973 208703 771769 8489459 14642773237 161070505607