22154540617 has 24 divisors (see below), whose sum is σ = 24705739520. Its totient is φ = 19848628800.

The previous prime is 22154540563. The next prime is 22154540659. The reversal of 22154540617 is 71604545122.

It is not a de Polignac number, because 22154540617 - 2¹⁵ = 22154507849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22154510617) 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, 6029893 + ... + 6033565.

Almost surely, 2^22154540617 is an apocalyptic number.

It is an amenable number.

22154540617 is a deficient number, since it is larger than the sum of its proper divisors (2551198903).

22154540617 is a wasteful number, since it uses less digits than its factorization.

22154540617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405 (or 4394 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 22154540617 in words is "twenty-two billion, one hundred fifty-four million, five hundred forty thousand, six hundred seventeen".