77608805120 has 144 divisors (see below), whose sum is σ = 231768407808. Its totient is φ = 24189726720.

The previous prime is 77608805089. The next prime is 77608805123. The reversal of 77608805120 is 2150880677.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (77608805123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295154 + ... + 492273.

It is an arithmetic number, because the mean of its divisors is an integer number (1609502832).

Almost surely, 2^77608805120 is an apocalyptic number.

77608805120 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

77608805120 is an abundant number, since it is smaller than the sum of its proper divisors (154159602688).

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

77608805120 is a wasteful number, since it uses less digits than its factorization.

77608805120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787466 (or 787452 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 44.

The spelling of 77608805120 in words is "seventy-seven billion, six hundred eight million, eight hundred five thousand, one hundred twenty".