77196490615 has 4 divisors (see below), whose sum is σ = 92635788744. Its totient is φ = 61757192488.

The previous prime is 77196490607. The next prime is 77196490621. The reversal of 77196490615 is 51609469177.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77196490615 - 2³ = 77196490607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7719649057 + ... + 7719649066.

It is an arithmetic number, because the mean of its divisors is an integer number (23158947186).

Almost surely, 2^77196490615 is an apocalyptic number.

77196490615 is a deficient number, since it is larger than the sum of its proper divisors (15439298129).

77196490615 is a wasteful number, since it uses less digits than its factorization.

77196490615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15439298128.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The spelling of 77196490615 in words is "seventy-seven billion, one hundred ninety-six million, four hundred ninety thousand, six hundred fifteen".