77385291056 has 20 divisors (see below), whose sum is σ = 156452871792. Its totient is φ = 37010356416.

The previous prime is 77385291047. The next prime is 77385291059. The reversal of 77385291056 is 65019258377.

It is a junction number, because it is equal to n+sod(n) for n = 77385290989 and 77385291007.

It is not an unprimeable number, because it can be changed into a prime (77385291059) by changing a digit.

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, 105142691 + ... + 105143426.

Almost surely, 2^77385291056 is an apocalyptic number.

It is an amenable number.

77385291056 is an abundant number, since it is smaller than the sum of its proper divisors (79067580736).

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

77385291056 is a wasteful number, since it uses less digits than its factorization.

77385291056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210286148 (or 210286142 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 77385291056 in words is "seventy-seven billion, three hundred eighty-five million, two hundred ninety-one thousand, fifty-six".