20005912799 has 2 divisors, whose sum is σ = 20005912800. Its totient is φ = 20005912798.

The previous prime is 20005912781. The next prime is 20005912807. The reversal of 20005912799 is 99721950002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20005912799 - 2²⁴ = 19989135583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20005912709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002956399 + 10002956400.

It is an arithmetic number, because the mean of its divisors is an integer number (10002956400).

Almost surely, 2^20005912799 is an apocalyptic number.

20005912799 is a deficient number, since it is larger than the sum of its proper divisors (1).

20005912799 is an equidigital number, since it uses as much as digits as its factorization.

20005912799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 44.

The spelling of 20005912799 in words is "twenty billion, five million, nine hundred twelve thousand, seven hundred ninety-nine".