21153251359 has 2 divisors, whose sum is σ = 21153251360. Its totient is φ = 21153251358.

The previous prime is 21153251333. The next prime is 21153251387. The reversal of 21153251359 is 95315235112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21153251359 - 2²³ = 21144862751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21153251159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10576625679 + 10576625680.

It is an arithmetic number, because the mean of its divisors is an integer number (10576625680).

Almost surely, 2^21153251359 is an apocalyptic number.

21153251359 is a deficient number, since it is larger than the sum of its proper divisors (1).

21153251359 is an equidigital number, since it uses as much as digits as its factorization.

21153251359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40500, while the sum is 37.

The spelling of 21153251359 in words is "twenty-one billion, one hundred fifty-three million, two hundred fifty-one thousand, three hundred fifty-nine".