77786585328575 has 12 divisors (see below), whose sum is σ = 96456385812120. Its totient is φ = 62228610195360.

The previous prime is 77786585328401. The next prime is 77786585328581. The reversal of 77786585328575 is 57582358568777.

It is not a de Polignac number, because 77786585328575 - 2³⁰ = 77785511586751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77786585328493 and 77786585328502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14033345 + ... + 18775194.

It is an arithmetic number, because the mean of its divisors is an integer number (8038032151010).

Almost surely, 2^{77786585328575} is an apocalyptic number.

77786585328575 is a deficient number, since it is larger than the sum of its proper divisors (18669800483545).

77786585328575 is a wasteful number, since it uses less digits than its factorization.

77786585328575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32903386 (or 32903381 counting only the distinct ones).

The product of its digits is 27659520000, while the sum is 83.

The spelling of 77786585328575 in words is "seventy-seven trillion, seven hundred eighty-six billion, five hundred eighty-five million, three hundred twenty-eight thousand, five hundred seventy-five".