22515541142 has 4 divisors (see below), whose sum is σ = 33773311716. Its totient is φ = 11257770570.

The previous prime is 22515541129. The next prime is 22515541163. The reversal of 22515541142 is 24114551522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24114551522 = 2 ⋅12057275761.

It is a junction number, because it is equal to n+sod(n) for n = 22515541099 and 22515541108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5628885284 + ... + 5628885287.

It is an arithmetic number, because the mean of its divisors is an integer number (8443327929).

Almost surely, 2^22515541142 is an apocalyptic number.

22515541142 is a deficient number, since it is larger than the sum of its proper divisors (11257770574).

22515541142 is a wasteful number, since it uses less digits than its factorization.

22515541142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11257770573.

The product of its digits is 16000, while the sum is 32.

The spelling of 22515541142 in words is "twenty-two billion, five hundred fifteen million, five hundred forty-one thousand, one hundred forty-two".