79818522523 has 2 divisors, whose sum is σ = 79818522524. Its totient is φ = 79818522522.

The previous prime is 79818522517. The next prime is 79818522551. The reversal of 79818522523 is 32522581897.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79818522523 is a prime.

It is not a weakly prime, because it can be changed into another prime (79818532523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39909261261 + 39909261262.

It is an arithmetic number, because the mean of its divisors is an integer number (39909261262).

Almost surely, 2^79818522523 is an apocalyptic number.

79818522523 is a deficient number, since it is larger than the sum of its proper divisors (1).

79818522523 is an equidigital number, since it uses as much as digits as its factorization.

79818522523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2419200, while the sum is 52.

The spelling of 79818522523 in words is "seventy-nine billion, eight hundred eighteen million, five hundred twenty-two thousand, five hundred twenty-three".