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64980371358 = 2327717263623
BaseRepresentation
bin111100100001001000…
…011100011110011110
320012201121000212212200
4330201020130132132
52031034433340413
645503534512330
74460163020550
oct744110343636
9205647025780
1064980371358
11256157a8851
12107159656a6
1361875056a6
1432060c54d0
151a54acd573
hexf2121c79e

64980371358 has 48 divisors (see below), whose sum is σ = 163170049536. Its totient is φ = 18304327440.

The previous prime is 64980371347. The next prime is 64980371389. The reversal of 64980371358 is 85317308946.

64980371358 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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3622866 + ... + 3640757.

It is an arithmetic number, because the mean of its divisors is an integer number (3399376032).

Almost surely, 264980371358 is an apocalyptic number.

64980371358 is an abundant number, since it is smaller than the sum of its proper divisors (98189678178).

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

64980371358 is a wasteful number, since it uses less digits than its factorization.

64980371358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7263709 (or 7263706 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 64980371358 in words is "sixty-four billion, nine hundred eighty million, three hundred seventy-one thousand, three hundred fifty-eight".

Divisors: 1 2 3 6 7 9 14 18 21 42 63 71 126 142 213 426 497 639 994 1278 1491 2982 4473 8946 7263623 14527246 21790869 43581738 50845361 65372607 101690722 130745214 152536083 305072166 457608249 515717233 915216498 1031434466 1547151699 3094303398 3610020631 4641455097 7220041262 9282910194 10830061893 21660123786 32490185679 64980371358