21452679331 has 2 divisors, whose sum is σ = 21452679332. Its totient is φ = 21452679330.

The previous prime is 21452679319. The next prime is 21452679379. The reversal of 21452679331 is 13397625412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21452679331 - 2⁵ = 21452679299 is a prime.

It is a super-2 number, since 2×21452679331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21452679431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10726339665 + 10726339666.

It is an arithmetic number, because the mean of its divisors is an integer number (10726339666).

Almost surely, 2^21452679331 is an apocalyptic number.

21452679331 is a deficient number, since it is larger than the sum of its proper divisors (1).

21452679331 is an equidigital number, since it uses as much as digits as its factorization.

21452679331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The spelling of 21452679331 in words is "twenty-one billion, four hundred fifty-two million, six hundred seventy-nine thousand, three hundred thirty-one".