770370446640 has 80 divisors (see below), whose sum is σ = 2470498351200. Its totient is φ = 198348251136.

The previous prime is 770370446627. The next prime is 770370446647. The reversal of 770370446640 is 46644073077.

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 (48).

It is a self number, because there is not a number n which added to its sum of digits gives 770370446640.

It is not an unprimeable number, because it can be changed into a prime (770370446647) 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, 55335745 + ... + 55349664.

It is an arithmetic number, because the mean of its divisors is an integer number (30881229390).

Almost surely, 2^770370446640 is an apocalyptic number.

It is an amenable number.

770370446640 is an abundant number, since it is smaller than the sum of its proper divisors (1700127904560).

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

770370446640 is a wasteful number, since it uses less digits than its factorization.

770370446640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110685454 (or 110685448 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 48.

The spelling of 770370446640 in words is "seven hundred seventy billion, three hundred seventy million, four hundred forty-six thousand, six hundred forty".