22451138942 has 8 divisors (see below), whose sum is σ = 34179346056. Its totient is φ = 11058023592.

The previous prime is 22451138921. The next prime is 22451138947. The reversal of 22451138942 is 24983115422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22451138942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22451138947) 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, 83772773 + ... + 83773040.

It is an arithmetic number, because the mean of its divisors is an integer number (4272418257).

Almost surely, 2^22451138942 is an apocalyptic number.

22451138942 is a deficient number, since it is larger than the sum of its proper divisors (11728207114).

22451138942 is a wasteful number, since it uses less digits than its factorization.

22451138942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167545882.

The product of its digits is 138240, while the sum is 41.

The spelling of 22451138942 in words is "twenty-two billion, four hundred fifty-one million, one hundred thirty-eight thousand, nine hundred forty-two".