655501116520 has 16 divisors (see below), whose sum is σ = 1474877512260. Its totient is φ = 262200446592.

The previous prime is 655501116509. The next prime is 655501116539. The reversal of 655501116520 is 25611105556.

It can be written as a sum of positive squares in 2 ways, for example, as 653953638276 + 1547478244 = 808674^2 + 39338^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 655501116520.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8193763917 + ... + 8193763996.

Almost surely, 2^655501116520 is an apocalyptic number.

It is an amenable number.

655501116520 is an abundant number, since it is smaller than the sum of its proper divisors (819376395740).

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

655501116520 is a wasteful number, since it uses less digits than its factorization.

655501116520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16387527924 (or 16387527920 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 37.

The spelling of 655501116520 in words is "six hundred fifty-five billion, five hundred one million, one hundred sixteen thousand, five hundred twenty".