79562956643 has 2 divisors, whose sum is σ = 79562956644. Its totient is φ = 79562956642.

The previous prime is 79562956639. The next prime is 79562956729. The reversal of 79562956643 is 34665926597.

It is a weak prime.

It is an emirp because it is prime and its reverse (34665926597) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79562956643 - 2² = 79562956639 is a prime.

It is not a weakly prime, because it can be changed into another prime (79562956243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39781478321 + 39781478322.

It is an arithmetic number, because the mean of its divisors is an integer number (39781478322).

Almost surely, 2^79562956643 is an apocalyptic number.

79562956643 is a deficient number, since it is larger than the sum of its proper divisors (1).

79562956643 is an equidigital number, since it uses as much as digits as its factorization.

79562956643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73483200, while the sum is 62.

The spelling of 79562956643 in words is "seventy-nine billion, five hundred sixty-two million, nine hundred fifty-six thousand, six hundred forty-three".