79271263829 has 2 divisors, whose sum is σ = 79271263830. Its totient is φ = 79271263828.

The previous prime is 79271263811. The next prime is 79271263843. The reversal of 79271263829 is 92836217297.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69657461329 + 9613802500 = 263927^2 + 98050^2 .

It is a cyclic number.

It is not a de Polignac number, because 79271263829 - 2²⁰ = 79270215253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79271233829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39635631914 + 39635631915.

It is an arithmetic number, because the mean of its divisors is an integer number (39635631915).

Almost surely, 2^79271263829 is an apocalyptic number.

It is an amenable number.

79271263829 is a deficient number, since it is larger than the sum of its proper divisors (1).

79271263829 is an equidigital number, since it uses as much as digits as its factorization.

79271263829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 56.

The spelling of 79271263829 in words is "seventy-nine billion, two hundred seventy-one million, two hundred sixty-three thousand, eight hundred twenty-nine".