768821573432 has 16 divisors (see below), whose sum is σ = 1572589582200. Its totient is φ = 349464351520.

The previous prime is 768821573423. The next prime is 768821573437. The reversal of 768821573432 is 234375128867.

It is a super-2 number, since 2×768821573432² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768821573437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4368304307 + ... + 4368304482.

Almost surely, 2^768821573432 is an apocalyptic number.

It is an amenable number.

768821573432 is an abundant number, since it is smaller than the sum of its proper divisors (803768008768).

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

768821573432 is a wasteful number, since it uses less digits than its factorization.

768821573432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8736608806 (or 8736608802 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 56.

The spelling of 768821573432 in words is "seven hundred sixty-eight billion, eight hundred twenty-one million, five hundred seventy-three thousand, four hundred thirty-two".