64856034610431 has 8 divisors (see below), whose sum is σ = 86545768457904. Its totient is φ = 43201828584960.

The previous prime is 64856034610307. The next prime is 64856034610441. The reversal of 64856034610431 is 13401643065846.

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

It is not a de Polignac number, because 64856034610431 - 2⁷ = 64856034610303 is a prime.

It is a super-2 number, since 2×64856034610431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64856034610441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8881951240 + ... + 8881958541.

It is an arithmetic number, because the mean of its divisors is an integer number (10818221057238).

Almost surely, 2^{64856034610431} is an apocalyptic number.

64856034610431 is a deficient number, since it is larger than the sum of its proper divisors (21689733847473).

64856034610431 is a wasteful number, since it uses less digits than its factorization.

64856034610431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17763911001.

The product of its (nonzero) digits is 4976640, while the sum is 51.

The spelling of 64856034610431 in words is "sixty-four trillion, eight hundred fifty-six billion, thirty-four million, six hundred ten thousand, four hundred thirty-one".