77857560755575 has 12 divisors (see below), whose sum is σ = 97445649876120. Its totient is φ = 61703935998560.

The previous prime is 77857560755521. The next prime is 77857560755587. The reversal of 77857560755575 is 57555706575877.

It is not a de Polignac number, because 77857560755575 - 2⁹ = 77857560755063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77857560755495 and 77857560755504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14552812420 + ... + 14552817769.

It is an arithmetic number, because the mean of its divisors is an integer number (8120470823010).

Almost surely, 2^{77857560755575} is an apocalyptic number.

77857560755575 is a deficient number, since it is larger than the sum of its proper divisors (19588089120545).

77857560755575 is a wasteful number, since it uses less digits than its factorization.

77857560755575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29105630306 (or 29105630301 counting only the distinct ones).

The product of its (nonzero) digits is 12605250000, while the sum is 79.

The spelling of 77857560755575 in words is "seventy-seven trillion, eight hundred fifty-seven billion, five hundred sixty million, seven hundred fifty-five thousand, five hundred seventy-five".