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16640072752 = 2423371222097
BaseRepresentation
bin11110111111101001…
…10101110000110000
31120221200020021112211
433133310311300300
5233034324312002
611351102301504
71126233166432
oct173764656060
946850207484
1016640072752
117069983a46
123284887894
1317525727c4
14b3bd8a652
15675ccbdd7
hex3dfd35c30

16640072752 has 40 divisors (see below), whose sum is σ = 34551154656. Its totient is φ = 7743200256.

The previous prime is 16640072741. The next prime is 16640072759. The reversal of 16640072752 is 25727004661.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16640072759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597433 + ... + 624664.

Almost surely, 216640072752 is an apocalyptic number.

It is an amenable number.

16640072752 is an abundant number, since it is smaller than the sum of its proper divisors (17911081904).

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

16640072752 is a wasteful number, since it uses less digits than its factorization.

16640072752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222165 (or 1222159 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 16640072752 in words is "sixteen billion, six hundred forty million, seventy-two thousand, seven hundred fifty-two".

Divisors: 1 2 4 8 16 23 37 46 74 92 148 184 296 368 592 851 1702 3404 6808 13616 1222097 2444194 4888388 9776776 19553552 28108231 45217589 56216462 90435178 112432924 180870356 224865848 361740712 449731696 723481424 1040004547 2080009094 4160018188 8320036376 16640072752