22431244444542 has 48 divisors (see below), whose sum is σ = 51460415718192. Its totient is φ = 7037184510720.

The previous prime is 22431244444541. The next prime is 22431244444571. The reversal of 22431244444542 is 24544444213422.

22431244444542 is a `hidden beast` number, since 2 + 2 + 4 + 3 + 1 + 24 + 44 + 44 + 542 = 666.

It is a super-2 number, since 2×22431244444542² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431244444541) 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, 37654893 + ... + 38245959.

It is an arithmetic number, because the mean of its divisors is an integer number (1072091994129).

Almost surely, 2^{22431244444542} is an apocalyptic number.

22431244444542 is an abundant number, since it is smaller than the sum of its proper divisors (29029171273650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22431244444542 is a wasteful number, since it uses less digits than its factorization.

22431244444542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715113 (or 715110 counting only the distinct ones).

The product of its digits is 3932160, while the sum is 45.

Adding to 22431244444542 its reverse (24544444213422), we get a palindrome (46975688657964).

The spelling of 22431244444542 in words is "twenty-two trillion, four hundred thirty-one billion, two hundred forty-four million, four hundred forty-four thousand, five hundred forty-two".