77757550374244 has 96 divisors (see below), whose sum is σ = 159024705840000. Its totient is φ = 32958726128640.

The previous prime is 77757550374211. The next prime is 77757550374289. The reversal of 77757550374244 is 44247305575777.

It is a self number, because there is not a number n which added to its sum of digits gives 77757550374244.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246507 + ... + 12473005.

It is an arithmetic number, because the mean of its divisors is an integer number (1656507352500).

Almost surely, 2^{77757550374244} is an apocalyptic number.

It is an amenable number.

77757550374244 is an abundant number, since it is smaller than the sum of its proper divisors (81267155465756).

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

77757550374244 is a wasteful number, since it uses less digits than its factorization.

77757550374244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12226733 (or 12226731 counting only the distinct ones).

The product of its (nonzero) digits is 806736000, while the sum is 67.

The spelling of 77757550374244 in words is "seventy-seven trillion, seven hundred fifty-seven billion, five hundred fifty million, three hundred seventy-four thousand, two hundred forty-four".