20298926899 has 2 divisors, whose sum is σ = 20298926900. Its totient is φ = 20298926898.

The previous prime is 20298926803. The next prime is 20298926903. The reversal of 20298926899 is 99862989202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20298926899 - 2¹⁷ = 20298795827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20298926899.

It is not a weakly prime, because it can be changed into another prime (20298926699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10149463449 + 10149463450.

It is an arithmetic number, because the mean of its divisors is an integer number (10149463450).

Almost surely, 2^20298926899 is an apocalyptic number.

20298926899 is a deficient number, since it is larger than the sum of its proper divisors (1).

20298926899 is an equidigital number, since it uses as much as digits as its factorization.

20298926899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20155392, while the sum is 64.

The spelling of 20298926899 in words is "twenty billion, two hundred ninety-eight million, nine hundred twenty-six thousand, eight hundred ninety-nine".