77556380108 has 24 divisors (see below), whose sum is σ = 136516423680. Its totient is φ = 38552341520.

The previous prime is 77556380093. The next prime is 77556380123. The reversal of 77556380108 is 80108365577.

It is an interprime number because it is at equal distance from previous prime (77556380093) and next prime (77556380123).

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 7 ways as a sum of consecutive naturals, for example, 395063 + ... + 557841.

It is an arithmetic number, because the mean of its divisors is an integer number (5688184320).

Almost surely, 2^77556380108 is an apocalyptic number.

It is an amenable number.

77556380108 is a deficient number, since it is larger than the sum of its proper divisors (58960043572).

77556380108 is a wasteful number, since it uses less digits than its factorization.

77556380108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163477 (or 163475 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 77556380108 in words is "seventy-seven billion, five hundred fifty-six million, three hundred eighty thousand, one hundred eight".