20252660999 has 2 divisors, whose sum is σ = 20252661000. Its totient is φ = 20252660998.

The previous prime is 20252660957. The next prime is 20252661047. The reversal of 20252660999 is 99906625202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20252660999 - 2²⁴ = 20235883783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20252660699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10126330499 + 10126330500.

It is an arithmetic number, because the mean of its divisors is an integer number (10126330500).

Almost surely, 2^20252660999 is an apocalyptic number.

20252660999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20252660999 is an equidigital number, since it uses as much as digits as its factorization.

20252660999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 20252660999 in words is "twenty billion, two hundred fifty-two million, six hundred sixty thousand, nine hundred ninety-nine".