77840373073128 has 32 divisors (see below), whose sum is σ = 194603287592160. Its totient is φ = 25946477036480.

The previous prime is 77840373073039. The next prime is 77840373073193. The reversal of 77840373073128 is 82137037304877.

77840373073128 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×77840373073128³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17595375 + ... + 21570302.

It is an arithmetic number, because the mean of its divisors is an integer number (6081352737255).

Almost surely, 2^{77840373073128} is an apocalyptic number.

It is an amenable number.

77840373073128 is an abundant number, since it is smaller than the sum of its proper divisors (116762914519032).

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

77840373073128 is a wasteful number, since it uses less digits than its factorization.

77840373073128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39248497 (or 39248493 counting only the distinct ones).

The product of its (nonzero) digits is 33191424, while the sum is 60.

The spelling of 77840373073128 in words is "seventy-seven trillion, eight hundred forty billion, three hundred seventy-three million, seventy-three thousand, one hundred twenty-eight".