21292337579 has 2 divisors, whose sum is σ = 21292337580. Its totient is φ = 21292337578.

The previous prime is 21292337567. The next prime is 21292337597. The reversal of 21292337579 is 97573329212.

Together with next prime (21292337597) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21292337579 - 2⁸ = 21292337323 is a prime.

It is not a weakly prime, because it can be changed into another prime (21292337179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10646168789 + 10646168790.

It is an arithmetic number, because the mean of its divisors is an integer number (10646168790).

Almost surely, 2^21292337579 is an apocalyptic number.

21292337579 is a deficient number, since it is larger than the sum of its proper divisors (1).

21292337579 is an equidigital number, since it uses as much as digits as its factorization.

21292337579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 50.

The spelling of 21292337579 in words is "twenty-one billion, two hundred ninety-two million, three hundred thirty-seven thousand, five hundred seventy-nine".