21424614153 has 4 divisors (see below), whose sum is σ = 28566152208. Its totient is φ = 14283076100.

The previous prime is 21424614151. The next prime is 21424614179. The reversal of 21424614153 is 35141642412.

It is a happy number.

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 21424614153 - 2¹ = 21424614151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21424614151) 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, 3570769023 + ... + 3570769028.

It is an arithmetic number, because the mean of its divisors is an integer number (7141538052).

Almost surely, 2^21424614153 is an apocalyptic number.

It is an amenable number.

21424614153 is a deficient number, since it is larger than the sum of its proper divisors (7141538055).

21424614153 is an equidigital number, since it uses as much as digits as its factorization.

21424614153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7141538054.

The product of its digits is 23040, while the sum is 33.

The spelling of 21424614153 in words is "twenty-one billion, four hundred twenty-four million, six hundred fourteen thousand, one hundred fifty-three".