77533325555 has 48 divisors (see below), whose sum is σ = 114340745664. Its totient is φ = 49416756480.

The previous prime is 77533325549. The next prime is 77533325563. The reversal of 77533325555 is 55552333577.

It is not a de Polignac number, because 77533325555 - 2²⁰ = 77532276979 is a prime.

It is a super-2 number, since 2×77533325555² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

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 47 ways as a sum of consecutive naturals, for example, 611765 + ... + 727545.

It is an arithmetic number, because the mean of its divisors is an integer number (2382098868).

Almost surely, 2^77533325555 is an apocalyptic number.

77533325555 is a deficient number, since it is larger than the sum of its proper divisors (36807420109).

77533325555 is a wasteful number, since it uses less digits than its factorization.

77533325555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115884 (or 115865 counting only the distinct ones).

The product of its digits is 8268750, while the sum is 50.

The spelling of 77533325555 in words is "seventy-seven billion, five hundred thirty-three million, three hundred twenty-five thousand, five hundred fifty-five".