77597308986156 has 144 divisors (see below), whose sum is σ = 201095897882880. Its totient is φ = 25221099496320.

The previous prime is 77597308986121. The next prime is 77597308986167. The reversal of 77597308986156 is 65168980379577.

77597308986156 is a `hidden beast` number, since 7 + 7 + 597 + 3 + 0 + 8 + 9 + 8 + 6 + 15 + 6 = 666.

77597308986156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 47 ways as a sum of consecutive naturals, for example, 190206465 + ... + 190613991.

Almost surely, 2^{77597308986156} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77597308986156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100547948941440).

77597308986156 is an abundant number, since it is smaller than the sum of its proper divisors (123498588896724).

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

77597308986156 is a wasteful number, since it uses less digits than its factorization.

77597308986156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408324 (or 408319 counting only the distinct ones).

The product of its (nonzero) digits is 4800902400, while the sum is 81.

The spelling of 77597308986156 in words is "seventy-seven trillion, five hundred ninety-seven billion, three hundred eight million, nine hundred eighty-six thousand, one hundred fifty-six".