79316443631 has 4 divisors (see below), whose sum is σ = 79354892832. Its totient is φ = 79277994432.

The previous prime is 79316443627. The next prime is 79316443663. The reversal of 79316443631 is 13634461397.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79316443631 - 2² = 79316443627 is a prime.

It is a super-2 number, since 2×79316443631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79316443681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19221506 + ... + 19225631.

It is an arithmetic number, because the mean of its divisors is an integer number (19838723208).

Almost surely, 2^79316443631 is an apocalyptic number.

79316443631 is a deficient number, since it is larger than the sum of its proper divisors (38449201).

79316443631 is a wasteful number, since it uses less digits than its factorization.

79316443631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38449200.

The product of its digits is 979776, while the sum is 47.

The spelling of 79316443631 in words is "seventy-nine billion, three hundred sixteen million, four hundred forty-three thousand, six hundred thirty-one".