21492596899259 has 2 divisors, whose sum is σ = 21492596899260. Its totient is φ = 21492596899258.

The previous prime is 21492596899231. The next prime is 21492596899349. The reversal of 21492596899259 is 95299869529412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21492596899259 is a prime.

It is not a weakly prime, because it can be changed into another prime (21492596899159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10746298449629 + 10746298449630.

It is an arithmetic number, because the mean of its divisors is an integer number (10746298449630).

Almost surely, 2^{21492596899259} is an apocalyptic number.

21492596899259 is a deficient number, since it is larger than the sum of its proper divisors (1).

21492596899259 is an equidigital number, since it uses as much as digits as its factorization.

21492596899259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2267481600, while the sum is 80.

The spelling of 21492596899259 in words is "twenty-one trillion, four hundred ninety-two billion, five hundred ninety-six million, eight hundred ninety-nine thousand, two hundred fifty-nine".