22153452451 has 4 divisors (see below), whose sum is σ = 23857564192. Its totient is φ = 20449340712.

The previous prime is 22153452449. The next prime is 22153452511. The reversal of 22153452451 is 15425435122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22153452451 - 2¹ = 22153452449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22153452421) 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, 852055851 + ... + 852055876.

It is an arithmetic number, because the mean of its divisors is an integer number (5964391048).

Almost surely, 2^22153452451 is an apocalyptic number.

22153452451 is a deficient number, since it is larger than the sum of its proper divisors (1704111741).

22153452451 is a wasteful number, since it uses less digits than its factorization.

22153452451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704111740.

The product of its digits is 48000, while the sum is 34.

Adding to 22153452451 its reverse (15425435122), we get a palindrome (37578887573).

The spelling of 22153452451 in words is "twenty-two billion, one hundred fifty-three million, four hundred fifty-two thousand, four hundred fifty-one".