79917481451 has 2 divisors, whose sum is σ = 79917481452. Its totient is φ = 79917481450.

The previous prime is 79917481429. The next prime is 79917481453. The reversal of 79917481451 is 15418471997.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79917481451 is a prime.

Together with 79917481453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79917481453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39958740725 + 39958740726.

It is an arithmetic number, because the mean of its divisors is an integer number (39958740726).

Almost surely, 2^79917481451 is an apocalyptic number.

79917481451 is a deficient number, since it is larger than the sum of its proper divisors (1).

79917481451 is an equidigital number, since it uses as much as digits as its factorization.

79917481451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 56.

The spelling of 79917481451 in words is "seventy-nine billion, nine hundred seventeen million, four hundred eighty-one thousand, four hundred fifty-one".