21132000793 has 2 divisors, whose sum is σ = 21132000794. Its totient is φ = 21132000792.

The previous prime is 21132000763. The next prime is 21132000817. The reversal of 21132000793 is 39700023112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15902975449 + 5229025344 = 126107^2 + 72312^2 .

It is a cyclic number.

It is not a de Polignac number, because 21132000793 - 2²⁵ = 21098446361 is a prime.

It is a super-2 number, since 2×21132000793² (a number of 21 digits) contains 22 as substring.

It is the 145369-th Hogben number.

It is not a weakly prime, because it can be changed into another prime (21132000763) by changing a digit.

It is a nontrivial repunit in base 145368.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566000396 + 10566000397.

It is an arithmetic number, because the mean of its divisors is an integer number (10566000397).

Almost surely, 2^21132000793 is an apocalyptic number.

It is an amenable number.

21132000793 is a deficient number, since it is larger than the sum of its proper divisors (1).

21132000793 is an equidigital number, since it uses as much as digits as its factorization.

21132000793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The spelling of 21132000793 in words is "twenty-one billion, one hundred thirty-two million, seven hundred ninety-three", and thus it is an aban number.