21412305753 has 4 divisors (see below), whose sum is σ = 28549741008. Its totient is φ = 14274870500.

The previous prime is 21412305667. The next prime is 21412305767. The reversal of 21412305753 is 35750321412.

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 21412305753 - 2¹² = 21412301657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21412305553) 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, 3568717623 + ... + 3568717628.

It is an arithmetic number, because the mean of its divisors is an integer number (7137435252).

Almost surely, 2^21412305753 is an apocalyptic number.

It is an amenable number.

21412305753 is a deficient number, since it is larger than the sum of its proper divisors (7137435255).

21412305753 is an equidigital number, since it uses as much as digits as its factorization.

21412305753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7137435254.

The product of its (nonzero) digits is 25200, while the sum is 33.

The spelling of 21412305753 in words is "twenty-one billion, four hundred twelve million, three hundred five thousand, seven hundred fifty-three".