79970268887 has 2 divisors, whose sum is σ = 79970268888. Its totient is φ = 79970268886.

The previous prime is 79970268811. The next prime is 79970268893. The reversal of 79970268887 is 78886207997.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79970268887 - 2¹⁰ = 79970267863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79970268887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79970268187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39985134443 + 39985134444.

It is an arithmetic number, because the mean of its divisors is an integer number (39985134444).

Almost surely, 2^79970268887 is an apocalyptic number.

79970268887 is a deficient number, since it is larger than the sum of its proper divisors (1).

79970268887 is an equidigital number, since it uses as much as digits as its factorization.

79970268887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170698752, while the sum is 71.

The spelling of 79970268887 in words is "seventy-nine billion, nine hundred seventy million, two hundred sixty-eight thousand, eight hundred eighty-seven".