79887552767 has 4 divisors (see below), whose sum is σ = 87150057576. Its totient is φ = 72625047960.

The previous prime is 79887552763. The next prime is 79887552799. The reversal of 79887552767 is 76725578897.

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 79887552767 - 2² = 79887552763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79887552767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79887552763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3631252388 + ... + 3631252409.

It is an arithmetic number, because the mean of its divisors is an integer number (21787514394).

Almost surely, 2^79887552767 is an apocalyptic number.

79887552767 is a deficient number, since it is larger than the sum of its proper divisors (7262504809).

79887552767 is a wasteful number, since it uses less digits than its factorization.

79887552767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7262504808.

The product of its digits is 414892800, while the sum is 71.

The spelling of 79887552767 in words is "seventy-nine billion, eight hundred eighty-seven million, five hundred fifty-two thousand, seven hundred sixty-seven".