77196115055256 has 32 divisors (see below), whose sum is σ = 194793935192640. Its totient is φ = 25491552011168.

The previous prime is 77196115055233. The next prime is 77196115055261. The reversal of 77196115055256 is 65255051169177.

It is a self number, because there is not a number n which added to its sum of digits gives 77196115055256.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 15030393666 + ... + 15030398801.

It is an arithmetic number, because the mean of its divisors is an integer number (6087310474770).

Almost surely, 2^{77196115055256} is an apocalyptic number.

It is an amenable number.

77196115055256 is an abundant number, since it is smaller than the sum of its proper divisors (117597820137384).

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

77196115055256 is a wasteful number, since it uses less digits than its factorization.

77196115055256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30060792583 (or 30060792579 counting only the distinct ones).

The product of its (nonzero) digits is 19845000, while the sum is 60.

The spelling of 77196115055256 in words is "seventy-seven trillion, one hundred ninety-six billion, one hundred fifteen million, fifty-five thousand, two hundred fifty-six".