79885772111 has 2 divisors, whose sum is σ = 79885772112. Its totient is φ = 79885772110.

The previous prime is 79885772093. The next prime is 79885772221. The reversal of 79885772111 is 11127758897.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79885772111 - 2²² = 79881577807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79885772711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39942886055 + 39942886056.

It is an arithmetic number, because the mean of its divisors is an integer number (39942886056).

Almost surely, 2^79885772111 is an apocalyptic number.

79885772111 is a deficient number, since it is larger than the sum of its proper divisors (1).

79885772111 is an equidigital number, since it uses as much as digits as its factorization.

79885772111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1975680, while the sum is 56.

The spelling of 79885772111 in words is "seventy-nine billion, eight hundred eighty-five million, seven hundred seventy-two thousand, one hundred eleven".