20012579708599 has 2 divisors, whose sum is σ = 20012579708600. Its totient is φ = 20012579708598.

The previous prime is 20012579708591. The next prime is 20012579708669. The reversal of 20012579708599 is 99580797521002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20012579708599 - 2³ = 20012579708591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20012579708599.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012579708591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006289854299 + 10006289854300.

It is an arithmetic number, because the mean of its divisors is an integer number (10006289854300).

Almost surely, 2^{20012579708599} is an apocalyptic number.

20012579708599 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012579708599 is an equidigital number, since it uses as much as digits as its factorization.

20012579708599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28576800, while the sum is 64.

The spelling of 20012579708599 in words is "twenty trillion, twelve billion, five hundred seventy-nine million, seven hundred eight thousand, five hundred ninety-nine".