77568522985 has 8 divisors (see below), whose sum is σ = 93492282816. Its totient is φ = 61781448240.

The previous prime is 77568522959. The next prime is 77568523001. The reversal of 77568522985 is 58922586577.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-77568522985 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34170021 + ... + 34172290.

It is an arithmetic number, because the mean of its divisors is an integer number (11686535352).

Almost surely, 2^77568522985 is an apocalyptic number.

It is an amenable number.

77568522985 is a deficient number, since it is larger than the sum of its proper divisors (15923759831).

77568522985 is a wasteful number, since it uses less digits than its factorization.

77568522985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68342543.

The product of its digits is 84672000, while the sum is 64.

The spelling of 77568522985 in words is "seventy-seven billion, five hundred sixty-eight million, five hundred twenty-two thousand, nine hundred eighty-five".