79811475911963 has 2 divisors, whose sum is σ = 79811475911964. Its totient is φ = 79811475911962.

The previous prime is 79811475911803. The next prime is 79811475911969. The reversal of 79811475911963 is 36911957411897.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79811475911963 - 2²⁰ = 79811474863387 is a prime.

It is not a weakly prime, because it can be changed into another prime (79811475911969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39905737955981 + 39905737955982.

It is an arithmetic number, because the mean of its divisors is an integer number (39905737955982).

Almost surely, 2^{79811475911963} is an apocalyptic number.

79811475911963 is a deficient number, since it is larger than the sum of its proper divisors (1).

79811475911963 is an equidigital number, since it uses as much as digits as its factorization.

79811475911963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102876480, while the sum is 71.

The spelling of 79811475911963 in words is "seventy-nine trillion, eight hundred eleven billion, four hundred seventy-five million, nine hundred eleven thousand, nine hundred sixty-three".