22042402551 has 24 divisors (see below), whose sum is σ = 34306848576. Its totient is φ = 13557170880.

The previous prime is 22042402541. The next prime is 22042402553. The reversal of 22042402551 is 15520424022.

22042402551 is a `hidden beast` number, since 2 + 204 + 2 + 402 + 5 + 51 = 666.

It is not a de Polignac number, because 22042402551 - 2⁷ = 22042402423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22042402553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168561 + ... + 269253.

It is an arithmetic number, because the mean of its divisors is an integer number (1429452024).

Almost surely, 2^22042402551 is an apocalyptic number.

22042402551 is a deficient number, since it is larger than the sum of its proper divisors (12264446025).

22042402551 is a wasteful number, since it uses less digits than its factorization.

22042402551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102583 (or 102580 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 22042402551 its reverse (15520424022), we get a palindrome (37562826573).

The spelling of 22042402551 in words is "twenty-two billion, forty-two million, four hundred two thousand, five hundred fifty-one".