22151794556 has 24 divisors (see below), whose sum is σ = 40815600000. Its totient is φ = 10490470704.

The previous prime is 22151794549. The next prime is 22151794619. The reversal of 22151794556 is 65549715122.

It is a self number, because there is not a number n which added to its sum of digits gives 22151794556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311195 + ... + 375693.

It is an arithmetic number, because the mean of its divisors is an integer number (1700650000).

Almost surely, 2^22151794556 is an apocalyptic number.

It is an amenable number.

22151794556 is a deficient number, since it is larger than the sum of its proper divisors (18663805444).

22151794556 is a wasteful number, since it uses less digits than its factorization.

22151794556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69041 (or 69039 counting only the distinct ones).

The product of its digits is 756000, while the sum is 47.

The spelling of 22151794556 in words is "twenty-two billion, one hundred fifty-one million, seven hundred ninety-four thousand, five hundred fifty-six".