22154539688 has 32 divisors (see below), whose sum is σ = 43367132160. Its totient is φ = 10590444480.

The previous prime is 22154539681. The next prime is 22154539697. The reversal of 22154539688 is 88693545122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22154539681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359906 + ... + 416942.

It is an arithmetic number, because the mean of its divisors is an integer number (1355222880).

Almost surely, 2^22154539688 is an apocalyptic number.

It is an amenable number.

22154539688 is a deficient number, since it is larger than the sum of its proper divisors (21212592472).

22154539688 is a wasteful number, since it uses less digits than its factorization.

22154539688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59177 (or 59173 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 53.

The spelling of 22154539688 in words is "twenty-two billion, one hundred fifty-four million, five hundred thirty-nine thousand, six hundred eighty-eight".