770621312560 has 80 divisors (see below), whose sum is σ = 1955116507392. Its totient is φ = 280148422400.

The previous prime is 770621312543. The next prime is 770621312563. The reversal of 770621312560 is 65213126077.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (770621312563) 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, 3111207 + ... + 3349753.

Almost surely, 2^770621312560 is an apocalyptic number.

It is an amenable number.

770621312560 is an abundant number, since it is smaller than the sum of its proper divisors (1184495194832).

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

770621312560 is a wasteful number, since it uses less digits than its factorization.

770621312560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242242 (or 242236 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 770621312560 in words is "seven hundred seventy billion, six hundred twenty-one million, three hundred twelve thousand, five hundred sixty".