78747577056 has 48 divisors (see below), whose sum is σ = 229680435600. Its totient is φ = 26249192064.

The previous prime is 78747577033. The next prime is 78747577127. The reversal of 78747577056 is 65077574787.

78747577056 is a `hidden beast` number, since 7 + 8 + 7 + 4 + 7 + 577 + 0 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 78747576984 and 78747577002.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 45570651 + ... + 45572378.

It is an arithmetic number, because the mean of its divisors is an integer number (4785009075).

Almost surely, 2^78747577056 is an apocalyptic number.

It is an amenable number.

78747577056 is an abundant number, since it is smaller than the sum of its proper divisors (150932858544).

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

78747577056 is a wasteful number, since it uses less digits than its factorization.

78747577056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91143048 (or 91143034 counting only the distinct ones).

The product of its (nonzero) digits is 80673600, while the sum is 63.

The spelling of 78747577056 in words is "seventy-eight billion, seven hundred forty-seven million, five hundred seventy-seven thousand, fifty-six".