79611646077 has 24 divisors (see below), whose sum is σ = 115607897600. Its totient is φ = 52791536160.

The previous prime is 79611646073. The next prime is 79611646129. The reversal of 79611646077 is 77064611697.

It is not a de Polignac number, because 79611646077 - 2² = 79611646073 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79611646073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9679827 + ... + 9688047.

Almost surely, 2^79611646077 is an apocalyptic number.

It is an amenable number.

79611646077 is a deficient number, since it is larger than the sum of its proper divisors (35996251523).

79611646077 is a wasteful number, since it uses less digits than its factorization.

79611646077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13833 (or 13830 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 54.

The spelling of 79611646077 in words is "seventy-nine billion, six hundred eleven million, six hundred forty-six thousand, seventy-seven".