21376683575479 has 2 divisors, whose sum is σ = 21376683575480. Its totient is φ = 21376683575478.

The previous prime is 21376683575473. The next prime is 21376683575521. The reversal of 21376683575479 is 97457538667312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21376683575479 - 2²⁹ = 21376146704567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21376683575473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10688341787739 + 10688341787740.

It is an arithmetic number, because the mean of its divisors is an integer number (10688341787740).

Almost surely, 2^{21376683575479} is an apocalyptic number.

21376683575479 is a deficient number, since it is larger than the sum of its proper divisors (1).

21376683575479 is an equidigital number, since it uses as much as digits as its factorization.

21376683575479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1600300800, while the sum is 73.

The spelling of 21376683575479 in words is "twenty-one trillion, three hundred seventy-six billion, six hundred eighty-three million, five hundred seventy-five thousand, four hundred seventy-nine".