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64468626287 = 1317344236481
BaseRepresentation
bin111100000010101000…
…010010101101101111
320011101221002112121112
4330002220102231233
52024012432020122
645341054222235
74441410165452
oct740250225557
9204357075545
1064468626287
112538294a13a
12105b24b497b
13610549a660
143198153499
151a24be52e2
hexf02a12b6f

64468626287 has 16 divisors (see below), whose sum is σ = 69855632448. Its totient is φ = 59143011840.

The previous prime is 64468626281. The next prime is 64468626289. The reversal of 64468626287 is 78262686446.

64468626287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 64468626287 - 28 = 64468626031 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 (64468626281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9944087 + ... + 9950567.

It is an arithmetic number, because the mean of its divisors is an integer number (4365977028).

Almost surely, 264468626287 is an apocalyptic number.

64468626287 is a deficient number, since it is larger than the sum of its proper divisors (5387006161).

64468626287 is a wasteful number, since it uses less digits than its factorization.

64468626287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11090.

The product of its digits is 37158912, while the sum is 59.

The spelling of 64468626287 in words is "sixty-four billion, four hundred sixty-eight million, six hundred twenty-six thousand, two hundred eighty-seven".

Divisors: 1 13 173 2249 4423 6481 57499 84253 765179 1121213 9947327 14575769 28665463 372651019 4959125099 64468626287