79257374947 has 2 divisors, whose sum is σ = 79257374948. Its totient is φ = 79257374946.

The previous prime is 79257374927. The next prime is 79257374983. The reversal of 79257374947 is 74947375297.

It is a weak prime.

It is an emirp because it is prime and its reverse (74947375297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79257374947 - 2³⁵ = 44897636579 is a prime.

It is not a weakly prime, because it can be changed into another prime (79257374927) 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, 39628687473 + 39628687474.

It is an arithmetic number, because the mean of its divisors is an integer number (39628687474).

Almost surely, 2^79257374947 is an apocalyptic number.

79257374947 is a deficient number, since it is larger than the sum of its proper divisors (1).

79257374947 is an equidigital number, since it uses as much as digits as its factorization.

79257374947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93350880, while the sum is 64.

The spelling of 79257374947 in words is "seventy-nine billion, two hundred fifty-seven million, three hundred seventy-four thousand, nine hundred forty-seven".