768398707940 has 24 divisors (see below), whose sum is σ = 1698565565760. Its totient is φ = 291182668128.

The previous prime is 768398707927. The next prime is 768398707943. The reversal of 768398707940 is 49707893867.

It is a super-2 number, since 2×768398707940² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (768398707943) 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, 1011050552 + ... + 1011051311.

It is an arithmetic number, because the mean of its divisors is an integer number (70773565240).

Almost surely, 2^768398707940 is an apocalyptic number.

It is an amenable number.

768398707940 is an abundant number, since it is smaller than the sum of its proper divisors (930166857820).

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

768398707940 is a wasteful number, since it uses less digits than its factorization.

768398707940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022101891 (or 2022101889 counting only the distinct ones).

The product of its (nonzero) digits is 128024064, while the sum is 68.

The spelling of 768398707940 in words is "seven hundred sixty-eight billion, three hundred ninety-eight million, seven hundred seven thousand, nine hundred forty".