764899113420 has 144 divisors (see below), whose sum is σ = 2501712787392. Its totient is φ = 188053608960.

The previous prime is 764899113397. The next prime is 764899113467. The reversal of 764899113420 is 24311998467.

764899113420 is a `hidden beast` number, since 7 + 6 + 489 + 9 + 1 + 134 + 20 = 666.

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 47 ways as a sum of consecutive naturals, for example, 1727230 + ... + 2124410.

It is an arithmetic number, because the mean of its divisors is an integer number (17373005468).

Almost surely, 2^764899113420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 764899113420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1250856393696).

764899113420 is an abundant number, since it is smaller than the sum of its proper divisors (1736813673972).

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

764899113420 is a wasteful number, since it uses less digits than its factorization.

764899113420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398032 (or 398027 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 764899113420 in words is "seven hundred sixty-four billion, eight hundred ninety-nine million, one hundred thirteen thousand, four hundred twenty".