64487618275 has 12 divisors (see below), whose sum is σ = 82722049200. Its totient is φ = 49811125280.

The previous prime is 64487618269. The next prime is 64487618303. The reversal of 64487618275 is 57281678446.

It is not a de Polignac number, because 64487618275 - 2³ = 64487618267 is a prime.

It is a super-2 number, since 2×64487618275² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44473495 + ... + 44474944.

It is an arithmetic number, because the mean of its divisors is an integer number (6893504100).

Almost surely, 2^64487618275 is an apocalyptic number.

64487618275 is a deficient number, since it is larger than the sum of its proper divisors (18234430925).

64487618275 is a wasteful number, since it uses less digits than its factorization.

64487618275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88948478 (or 88948473 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 58.

The spelling of 64487618275 in words is "sixty-four billion, four hundred eighty-seven million, six hundred eighteen thousand, two hundred seventy-five".