769400644640 has 48 divisors (see below), whose sum is σ = 1817847904320. Its totient is φ = 307736743680.

The previous prime is 769400644627. The next prime is 769400644651. The reversal of 769400644640 is 46446004967.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1997651 + ... + 2351469.

It is an arithmetic number, because the mean of its divisors is an integer number (37871831340).

Almost surely, 2^769400644640 is an apocalyptic number.

It is an amenable number.

769400644640 is an abundant number, since it is smaller than the sum of its proper divisors (1048447259680).

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

769400644640 is a wasteful number, since it uses less digits than its factorization.

769400644640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367425 (or 367417 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 50.

The spelling of 769400644640 in words is "seven hundred sixty-nine billion, four hundred million, six hundred forty-four thousand, six hundred forty".