21304455410541 has 4 divisors (see below), whose sum is σ = 28405940547392. Its totient is φ = 14202970273692.

The previous prime is 21304455410533. The next prime is 21304455410551. The reversal of 21304455410541 is 14501455440312.

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 not a de Polignac number, because 21304455410541 - 2³ = 21304455410533 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 21304455410541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21304455410551) 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, 3550742568421 + ... + 3550742568426.

It is an arithmetic number, because the mean of its divisors is an integer number (7101485136848).

Almost surely, 2^{21304455410541} is an apocalyptic number.

It is an amenable number.

21304455410541 is a deficient number, since it is larger than the sum of its proper divisors (7101485136851).

21304455410541 is an equidigital number, since it uses as much as digits as its factorization.

21304455410541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7101485136850.

The product of its (nonzero) digits is 192000, while the sum is 39.

The spelling of 21304455410541 in words is "twenty-one trillion, three hundred four billion, four hundred fifty-five million, four hundred ten thousand, five hundred forty-one".