22451320242 has 48 divisors (see below), whose sum is σ = 52435027008. Its totient is φ = 6901688160.

The previous prime is 22451320237. The next prime is 22451320279. The reversal of 22451320242 is 24202315422.

22451320242 is a `hidden beast` number, since 2 + 2 + 451 + 3 + 202 + 4 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211323 + ... + 299265.

It is an arithmetic number, because the mean of its divisors is an integer number (1092396396).

Almost surely, 2^22451320242 is an apocalyptic number.

22451320242 is an abundant number, since it is smaller than the sum of its proper divisors (29983706766).

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

22451320242 is a wasteful number, since it uses less digits than its factorization.

22451320242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89055 (or 89052 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 22451320242 its reverse (24202315422), we get a palindrome (46653635664).

The spelling of 22451320242 in words is "twenty-two billion, four hundred fifty-one million, three hundred twenty thousand, two hundred forty-two".