77088517009 has 16 divisors (see below), whose sum is σ = 90723952000. Its totient is φ = 65469639312.

The previous prime is 77088517007. The next prime is 77088517043. The reversal of 77088517009 is 90071588077.

It is not a de Polignac number, because 77088517009 - 2¹ = 77088517007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77088517001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 993567 + ... + 1068340.

It is an arithmetic number, because the mean of its divisors is an integer number (5670247000).

Almost surely, 2^77088517009 is an apocalyptic number.

It is an amenable number.

77088517009 is a deficient number, since it is larger than the sum of its proper divisors (13635434991).

77088517009 is a wasteful number, since it uses less digits than its factorization.

77088517009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062037 (or 2062023 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 52.

The spelling of 77088517009 in words is "seventy-seven billion, eighty-eight million, five hundred seventeen thousand, nine".