21992593411 has 2 divisors, whose sum is σ = 21992593412. Its totient is φ = 21992593410.

The previous prime is 21992593391. The next prime is 21992593451. The reversal of 21992593411 is 11439529912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21992593411 - 2⁵ = 21992593379 is a prime.

It is a super-2 number, since 2×21992593411² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21992593451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10996296705 + 10996296706.

It is an arithmetic number, because the mean of its divisors is an integer number (10996296706).

Almost surely, 2^21992593411 is an apocalyptic number.

21992593411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21992593411 is an equidigital number, since it uses as much as digits as its factorization.

21992593411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 46.

The spelling of 21992593411 in words is "twenty-one billion, nine hundred ninety-two million, five hundred ninety-three thousand, four hundred eleven".