79646435831 has 2 divisors, whose sum is σ = 79646435832. Its totient is φ = 79646435830.

The previous prime is 79646435819. The next prime is 79646435833. The reversal of 79646435831 is 13853464697.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79646435831 - 2²² = 79642241527 is a prime.

It is a super-2 number, since 2×79646435831² (a number of 23 digits) contains 22 as substring.

Together with 79646435833, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79646435833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39823217915 + 39823217916.

It is an arithmetic number, because the mean of its divisors is an integer number (39823217916).

Almost surely, 2^79646435831 is an apocalyptic number.

79646435831 is a deficient number, since it is larger than the sum of its proper divisors (1).

79646435831 is an equidigital number, since it uses as much as digits as its factorization.

79646435831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 56.

The spelling of 79646435831 in words is "seventy-nine billion, six hundred forty-six million, four hundred thirty-five thousand, eight hundred thirty-one".