77899767496703 has 16 divisors (see below), whose sum is σ = 79845119539200. Its totient is φ = 75977614107360.

The previous prime is 77899767496651. The next prime is 77899767496729. The reversal of 77899767496703 is 30769476799877.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 77899767496703 - 2³⁸ = 77624889589759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77899767426703) 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, 6371276 + ... + 14014017.

It is an arithmetic number, because the mean of its divisors is an integer number (4990319971200).

Almost surely, 2^{77899767496703} is an apocalyptic number.

77899767496703 is a deficient number, since it is larger than the sum of its proper divisors (1945352042497).

77899767496703 is a wasteful number, since it uses less digits than its factorization.

77899767496703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20385862.

The product of its (nonzero) digits is 42343959168, while the sum is 89.

The spelling of 77899767496703 in words is "seventy-seven trillion, eight hundred ninety-nine billion, seven hundred sixty-seven million, four hundred ninety-six thousand, seven hundred three".