77802836940 has 72 divisors (see below), whose sum is σ = 236235465648. Its totient is φ = 20726893440.

The previous prime is 77802836933. The next prime is 77802836987. The reversal of 77802836940 is 4963820877.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31006 + ... + 395685.

It is an arithmetic number, because the mean of its divisors is an integer number (3281048134).

Almost surely, 2^77802836940 is an apocalyptic number.

It is an amenable number.

77802836940 is an abundant number, since it is smaller than the sum of its proper divisors (158432628708).

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

77802836940 is a wasteful number, since it uses less digits than its factorization.

77802836940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427719 (or 427714 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 77802836940 in words is "seventy-seven billion, eight hundred two million, eight hundred thirty-six thousand, nine hundred forty".