79479142571 has 2 divisors, whose sum is σ = 79479142572. Its totient is φ = 79479142570.

The previous prime is 79479142423. The next prime is 79479142591. The reversal of 79479142571 is 17524197497.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79479142571 is a prime.

It is not a weakly prime, because it can be changed into another prime (79479142591) 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 as a sum of consecutive naturals, namely, 39739571285 + 39739571286.

It is an arithmetic number, because the mean of its divisors is an integer number (39739571286).

Almost surely, 2^79479142571 is an apocalyptic number.

79479142571 is a deficient number, since it is larger than the sum of its proper divisors (1).

79479142571 is an equidigital number, since it uses as much as digits as its factorization.

79479142571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4445280, while the sum is 56.

The spelling of 79479142571 in words is "seventy-nine billion, four hundred seventy-nine million, one hundred forty-two thousand, five hundred seventy-one".