655480716840 has 48 divisors (see below), whose sum is σ = 2130312330900. Its totient is φ = 174794857728.

The previous prime is 655480716743. The next prime is 655480716899. The reversal of 655480716840 is 48617084556.

655480716840 is a `hidden beast` number, since 6 + 5 + 548 + 0 + 7 + 16 + 84 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 631996380324 + 23484336516 = 794982^2 + 153246^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 910389525 + ... + 910390244.

Almost surely, 2^655480716840 is an apocalyptic number.

655480716840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

655480716840 is an abundant number, since it is smaller than the sum of its proper divisors (1474831614060).

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

655480716840 is a wasteful number, since it uses less digits than its factorization.

655480716840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820779786 (or 1820779779 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 655480716840 in words is "six hundred fifty-five billion, four hundred eighty million, seven hundred sixteen thousand, eight hundred forty".