64530923792 has 20 divisors (see below), whose sum is σ = 125035824576. Its totient is φ = 32263614240.

The previous prime is 64530923791. The next prime is 64530923803. The reversal of 64530923792 is 29732903546.

It is a self number, because there is not a number n which added to its sum of digits gives 64530923792.

It is not an unprimeable number, because it can be changed into a prime (64530923791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198533 + ... + 410459.

Almost surely, 2^64530923792 is an apocalyptic number.

It is an amenable number.

64530923792 is a deficient number, since it is larger than the sum of its proper divisors (60504900784).

64530923792 is a wasteful number, since it uses less digits than its factorization.

64530923792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230966 (or 230960 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 50.

The spelling of 64530923792 in words is "sixty-four billion, five hundred thirty million, nine hundred twenty-three thousand, seven hundred ninety-two".