768508721020 has 24 divisors (see below), whose sum is σ = 1617076821024. Its totient is φ = 306792344256.

The previous prime is 768508721017. The next prime is 768508721021. The reversal of 768508721020 is 20127805867.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768508721021) 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, 38186199 + ... + 38206318.

It is an arithmetic number, because the mean of its divisors is an integer number (67378200876).

Almost surely, 2^768508721020 is an apocalyptic number.

It is an amenable number.

768508721020 is an abundant number, since it is smaller than the sum of its proper divisors (848568100004).

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

768508721020 is a wasteful number, since it uses less digits than its factorization.

768508721020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76393029 (or 76393027 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 768508721020 in words is "seven hundred sixty-eight billion, five hundred eight million, seven hundred twenty-one thousand, twenty".