655776765552 has 80 divisors (see below), whose sum is σ = 1888149864960. Its totient is φ = 194905783296.

The previous prime is 655776765551. The next prime is 655776765557. The reversal of 655776765552 is 255567677556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655776765551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21133128 + ... + 21164135.

It is an arithmetic number, because the mean of its divisors is an integer number (23601873312).

Almost surely, 2^655776765552 is an apocalyptic number.

It is an amenable number.

655776765552 is an abundant number, since it is smaller than the sum of its proper divisors (1232373099408).

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

655776765552 is a wasteful number, since it uses less digits than its factorization.

655776765552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42297310 (or 42297304 counting only the distinct ones).

The product of its digits is 463050000, while the sum is 66.

The spelling of 655776765552 in words is "six hundred fifty-five billion, seven hundred seventy-six million, seven hundred sixty-five thousand, five hundred fifty-two".