64512156575 has 24 divisors (see below), whose sum is σ = 80564117376. Its totient is φ = 51242940000.

The previous prime is 64512156493. The next prime is 64512156689. The reversal of 64512156575 is 57565121546.

It is a de Polignac number, because none of the positive numbers 2^k-64512156575 is a prime.

It is a Duffinian number.

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, 13749980 + ... + 13754670.

It is an arithmetic number, because the mean of its divisors is an integer number (3356838224).

Almost surely, 2^64512156575 is an apocalyptic number.

64512156575 is a deficient number, since it is larger than the sum of its proper divisors (16051960801).

64512156575 is a wasteful number, since it uses less digits than its factorization.

64512156575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8495 (or 8490 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 47.

The spelling of 64512156575 in words is "sixty-four billion, five hundred twelve million, one hundred fifty-six thousand, five hundred seventy-five".