77615510616120 has 64 divisors (see below), whose sum is σ = 233260113813120. Its totient is φ = 20660706656384.

The previous prime is 77615510616073. The next prime is 77615510616151. The reversal of 77615510616120 is 2161601551677.

It is a self number, because there is not a number n which added to its sum of digits gives 77615510616120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574351554 + ... + 574486673.

It is an arithmetic number, because the mean of its divisors is an integer number (3644689278330).

Almost surely, 2^{77615510616120} is an apocalyptic number.

It is an amenable number.

77615510616120 is an abundant number, since it is smaller than the sum of its proper divisors (155644603197000).

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

77615510616120 is a wasteful number, since it uses less digits than its factorization.

77615510616120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148838804 (or 1148838800 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 48.

The spelling of 77615510616120 in words is "seventy-seven trillion, six hundred fifteen billion, five hundred ten million, six hundred sixteen thousand, one hundred twenty".