21152360325353 has 32 divisors (see below), whose sum is σ = 23087882563200. Its totient is φ = 19302348570624.

The previous prime is 21152360325293. The next prime is 21152360325367. The reversal of 21152360325353 is 35352306325112.

It is a cyclic number.

It is not a de Polignac number, because 21152360325353 - 2¹⁸ = 21152360063209 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 21152360325353.

It is not an unprimeable number, because it can be changed into a prime (21152360325553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2042319851 + ... + 2042330207.

It is an arithmetic number, because the mean of its divisors is an integer number (721496330100).

Almost surely, 2^{21152360325353} is an apocalyptic number.

It is an amenable number.

21152360325353 is a deficient number, since it is larger than the sum of its proper divisors (1935522237847).

21152360325353 is a wasteful number, since it uses less digits than its factorization.

21152360325353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18809.

The product of its (nonzero) digits is 486000, while the sum is 41.

The spelling of 21152360325353 in words is "twenty-one trillion, one hundred fifty-two billion, three hundred sixty million, three hundred twenty-five thousand, three hundred fifty-three".