79557834451 has 2 divisors, whose sum is σ = 79557834452. Its totient is φ = 79557834450.

The previous prime is 79557834449. The next prime is 79557834457. The reversal of 79557834451 is 15443875597.

It is a weak prime.

It is an emirp because it is prime and its reverse (15443875597) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79557834451 - 2¹ = 79557834449 is a prime.

Together with 79557834449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (79557834457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39778917225 + 39778917226.

It is an arithmetic number, because the mean of its divisors is an integer number (39778917226).

Almost surely, 2^79557834451 is an apocalyptic number.

79557834451 is a deficient number, since it is larger than the sum of its proper divisors (1).

79557834451 is an equidigital number, since it uses as much as digits as its factorization.

79557834451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168000, while the sum is 58.

The spelling of 79557834451 in words is "seventy-nine billion, five hundred fifty-seven million, eight hundred thirty-four thousand, four hundred fifty-one".