22615952772 has 48 divisors (see below), whose sum is σ = 60341162112. Its totient is φ = 6458277120.

The previous prime is 22615952767. The next prime is 22615952783. The reversal of 22615952772 is 27725951622.

It is a super-2 number, since 2×22615952772² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90322 + ... + 231062.

It is an arithmetic number, because the mean of its divisors is an integer number (1257107544).

Almost surely, 2^22615952772 is an apocalyptic number.

It is an amenable number.

22615952772 is an abundant number, since it is smaller than the sum of its proper divisors (37725209340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22615952772 is a wasteful number, since it uses less digits than its factorization.

22615952772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142668 (or 142666 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 48.

The spelling of 22615952772 in words is "twenty-two billion, six hundred fifteen million, nine hundred fifty-two thousand, seven hundred seventy-two".