655767712120 has 32 divisors (see below), whose sum is σ = 1476215640000. Its totient is φ = 262175833728.

The previous prime is 655767712099. The next prime is 655767712129. The reversal of 655767712120 is 21217767556.

655767712120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655767712129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4020639 + ... + 4180558.

It is an arithmetic number, because the mean of its divisors is an integer number (46131738750).

Almost surely, 2^655767712120 is an apocalyptic number.

It is an amenable number.

655767712120 is an abundant number, since it is smaller than the sum of its proper divisors (820447927880).

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

655767712120 is a wasteful number, since it uses less digits than its factorization.

655767712120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8203207 (or 8203203 counting only the distinct ones).

The product of its (nonzero) digits is 1234800, while the sum is 49.

The spelling of 655767712120 in words is "six hundred fifty-five billion, seven hundred sixty-seven million, seven hundred twelve thousand, one hundred twenty".