77345336615 has 4 divisors (see below), whose sum is σ = 92814403944. Its totient is φ = 61876269288.

The previous prime is 77345336609. The next prime is 77345336623. The reversal of 77345336615 is 51663354377.

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 77345336615 - 2⁴ = 77345336599 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7734533657 + ... + 7734533666.

It is an arithmetic number, because the mean of its divisors is an integer number (23203600986).

Almost surely, 2^77345336615 is an apocalyptic number.

77345336615 is a deficient number, since it is larger than the sum of its proper divisors (15469067329).

77345336615 is a wasteful number, since it uses less digits than its factorization.

77345336615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15469067328.

The product of its digits is 4762800, while the sum is 50.

The spelling of 77345336615 in words is "seventy-seven billion, three hundred forty-five million, three hundred thirty-six thousand, six hundred fifteen".