21492596899351 has 2 divisors, whose sum is σ = 21492596899352. Its totient is φ = 21492596899350.

The previous prime is 21492596899349. The next prime is 21492596899363. The reversal of 21492596899351 is 15399869529412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21492596899351 - 2¹ = 21492596899349 is a prime.

Together with 21492596899349, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21492596893351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10746298449675 + 10746298449676.

It is an arithmetic number, because the mean of its divisors is an integer number (10746298449676).

Almost surely, 2^{21492596899351} is an apocalyptic number.

21492596899351 is a deficient number, since it is larger than the sum of its proper divisors (1).

21492596899351 is an equidigital number, since it uses as much as digits as its factorization.

21492596899351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 377913600, while the sum is 73.

The spelling of 21492596899351 in words is "twenty-one trillion, four hundred ninety-two billion, five hundred ninety-six million, eight hundred ninety-nine thousand, three hundred fifty-one".