21092535361 has 4 divisors (see below), whose sum is σ = 21102380032. Its totient is φ = 21082690692.

The previous prime is 21092535337. The next prime is 21092535433. The reversal of 21092535361 is 16353529012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21092535361 - 2⁵ = 21092535329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21092535361.

It is not an unprimeable number, because it can be changed into a prime (21092535301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4919121 + ... + 4923406.

It is an arithmetic number, because the mean of its divisors is an integer number (5275595008).

Almost surely, 2^21092535361 is an apocalyptic number.

It is an amenable number.

21092535361 is a deficient number, since it is larger than the sum of its proper divisors (9844671).

21092535361 is an equidigital number, since it uses as much as digits as its factorization.

21092535361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9844670.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 21092535361 in words is "twenty-one billion, ninety-two million, five hundred thirty-five thousand, three hundred sixty-one".