77986137112608 has 48 divisors (see below), whose sum is σ = 208183332137760. Its totient is φ = 25554779390976.

The previous prime is 77986137112607. The next prime is 77986137112613. The reversal of 77986137112608 is 80621173168977.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (77986137112607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6884363785 + ... + 6884375112.

It is an arithmetic number, because the mean of its divisors is an integer number (4337152752870).

Almost surely, 2^{77986137112608} is an apocalyptic number.

It is an amenable number.

77986137112608 is an abundant number, since it is smaller than the sum of its proper divisors (130197195025152).

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

77986137112608 is a wasteful number, since it uses less digits than its factorization.

77986137112608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13768738969 (or 13768738961 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 66.

The spelling of 77986137112608 in words is "seventy-seven trillion, nine hundred eighty-six billion, one hundred thirty-seven million, one hundred twelve thousand, six hundred eight".