81792514799 has 2 divisors, whose sum is σ = 81792514800. Its totient is φ = 81792514798.

The previous prime is 81792514763. The next prime is 81792514813. The reversal of 81792514799 is 99741529718.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81792514799 - 2²⁴ = 81775737583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (81792714799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40896257399 + 40896257400.

It is an arithmetic number, because the mean of its divisors is an integer number (40896257400).

Almost surely, 2^81792514799 is an apocalyptic number.

81792514799 is a deficient number, since it is larger than the sum of its proper divisors (1).

81792514799 is an equidigital number, since it uses as much as digits as its factorization.

81792514799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11430720, while the sum is 62.

The spelling of 81792514799 in words is "eighty-one billion, seven hundred ninety-two million, five hundred fourteen thousand, seven hundred ninety-nine".