20112515593 has 2 divisors, whose sum is σ = 20112515594. Its totient is φ = 20112515592.

The previous prime is 20112515587. The next prime is 20112515653. The reversal of 20112515593 is 39551521102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13296857344 + 6815658249 = 115312^2 + 82557^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112515593 - 2⁹ = 20112515081 is a prime.

It is not a weakly prime, because it can be changed into another prime (20112515573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056257796 + 10056257797.

It is an arithmetic number, because the mean of its divisors is an integer number (10056257797).

Almost surely, 2^20112515593 is an apocalyptic number.

It is an amenable number.

20112515593 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112515593 is an equidigital number, since it uses as much as digits as its factorization.

20112515593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 34.

The spelling of 20112515593 in words is "twenty billion, one hundred twelve million, five hundred fifteen thousand, five hundred ninety-three".