648810036520 has 64 divisors (see below), whose sum is σ = 1535757408000. Its totient is φ = 246327852288.

The previous prime is 648810036493. The next prime is 648810036533. The reversal of 648810036520 is 25630018846.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4671552 + ... + 4808431.

It is an arithmetic number, because the mean of its divisors is an integer number (23996209500).

Almost surely, 2^648810036520 is an apocalyptic number.

It is an amenable number.

648810036520 is an abundant number, since it is smaller than the sum of its proper divisors (886947371480).

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

648810036520 is a wasteful number, since it uses less digits than its factorization.

648810036520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9480082 (or 9480078 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 648810036520 in words is "six hundred forty-eight billion, eight hundred ten million, thirty-six thousand, five hundred twenty".