64500315530 has 48 divisors (see below), whose sum is σ = 135081354240. Its totient is φ = 22110203808.

The previous prime is 64500315511. The next prime is 64500315541. The reversal of 64500315530 is 3551300546.

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, 3706991 + ... + 3724349.

It is an arithmetic number, because the mean of its divisors is an integer number (2814194880).

Almost surely, 2^64500315530 is an apocalyptic number.

64500315530 is an abundant number, since it is smaller than the sum of its proper divisors (70581038710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64500315530 is a wasteful number, since it uses less digits than its factorization.

64500315530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24963 (or 24956 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

The spelling of 64500315530 in words is "sixty-four billion, five hundred million, three hundred fifteen thousand, five hundred thirty".