77550111008 has 24 divisors (see below), whose sum is σ = 152695534572. Its totient is φ = 38770292736.

The previous prime is 77550110977. The next prime is 77550111047. The reversal of 77550111008 is 80011105577.

It can be written as a sum of positive squares in 2 ways, for example, as 73339139344 + 4210971664 = 270812^2 + 64892^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123416 + ... + 412712.

Almost surely, 2^77550111008 is an apocalyptic number.

It is an amenable number.

77550111008 is a deficient number, since it is larger than the sum of its proper divisors (75145423564).

77550111008 is a wasteful number, since it uses less digits than its factorization.

77550111008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297684 (or 297676 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 35.

The spelling of 77550111008 in words is "seventy-seven billion, five hundred fifty million, one hundred eleven thousand, eight".