21492596899231 has 2 divisors, whose sum is σ = 21492596899232. Its totient is φ = 21492596899230.

The previous prime is 21492596899159. The next prime is 21492596899259. The reversal of 21492596899231 is 13299869529412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21492596899231 - 2³⁹ = 20942841085343 is a prime.

It is a super-2 number, since 2×21492596899231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21492596899031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10746298449615 + 10746298449616.

It is an arithmetic number, because the mean of its divisors is an integer number (10746298449616).

Almost surely, 2^{21492596899231} is an apocalyptic number.

21492596899231 is a deficient number, since it is larger than the sum of its proper divisors (1).

21492596899231 is an equidigital number, since it uses as much as digits as its factorization.

21492596899231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151165440, while the sum is 70.

The spelling of 21492596899231 in words is "twenty-one trillion, four hundred ninety-two billion, five hundred ninety-six million, eight hundred ninety-nine thousand, two hundred thirty-one".