64000943457 has 12 divisors (see below), whose sum is σ = 93797526480. Its totient is φ = 38788450360.

The previous prime is 64000943441. The next prime is 64000943459. The reversal of 64000943457 is 75434900046.

64000943457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64000943457 - 2⁴ = 64000943441 is a prime.

It is a super-2 number, since 2×64000943457² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64000943459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88155207 + ... + 88155932.

It is an arithmetic number, because the mean of its divisors is an integer number (7816460540).

Almost surely, 2^64000943457 is an apocalyptic number.

It is an amenable number.

64000943457 is a deficient number, since it is larger than the sum of its proper divisors (29796583023).

64000943457 is a wasteful number, since it uses less digits than its factorization.

64000943457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176311164 (or 176311153 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 64000943457 in words is "sixty-four billion, nine hundred forty-three thousand, four hundred fifty-seven".