77120353918 has 32 divisors (see below), whose sum is σ = 123917838336. Its totient is φ = 35911653888.

The previous prime is 77120353883. The next prime is 77120353939. The reversal of 77120353918 is 81935302177.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324855 + ... + 509677.

It is an arithmetic number, because the mean of its divisors is an integer number (3872432448).

Almost surely, 2^77120353918 is an apocalyptic number.

77120353918 is a deficient number, since it is larger than the sum of its proper divisors (46797484418).

77120353918 is a wasteful number, since it uses less digits than its factorization.

77120353918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185088.

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 77120353918 in words is "seventy-seven billion, one hundred twenty million, three hundred fifty-three thousand, nine hundred eighteen".