77713506615 has 16 divisors (see below), whose sum is σ = 124511262048. Its totient is φ = 41390653056.

The previous prime is 77713506569. The next prime is 77713506649. The reversal of 77713506615 is 51660531777.

It is a happy number.

It is not a de Polignac number, because 77713506615 - 2⁹ = 77713506103 is a prime.

It is a super-2 number, since 2×77713506615² (a number of 23 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 3523044 + ... + 3545033.

It is an arithmetic number, because the mean of its divisors is an integer number (7781953878).

Almost surely, 2^77713506615 is an apocalyptic number.

77713506615 is a deficient number, since it is larger than the sum of its proper divisors (46797755433).

77713506615 is a wasteful number, since it uses less digits than its factorization.

77713506615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7068818.

The product of its (nonzero) digits is 926100, while the sum is 48.

The spelling of 77713506615 in words is "seventy-seven billion, seven hundred thirteen million, five hundred six thousand, six hundred fifteen".