764425345544 has 24 divisors (see below), whose sum is σ = 1667305282590. Its totient is φ = 327610862208.

The previous prime is 764425345469. The next prime is 764425345561. The reversal of 764425345544 is 445543524467.

It can be written as a sum of positive squares in only one way, i.e., 699380964100 + 65044381444 = 836290^2 + 255038^2 .

It is a super-2 number, since 2×764425345544² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 975031937 + ... + 975032720.

Almost surely, 2^764425345544 is an apocalyptic number.

It is an amenable number.

764425345544 is an abundant number, since it is smaller than the sum of its proper divisors (902879937046).

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

764425345544 is a wasteful number, since it uses less digits than its factorization.

764425345544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950064677 (or 1950064666 counting only the distinct ones).

The product of its digits is 32256000, while the sum is 53.

The spelling of 764425345544 in words is "seven hundred sixty-four billion, four hundred twenty-five million, three hundred forty-five thousand, five hundred forty-four".