22947542672 has 80 divisors (see below), whose sum is σ = 47300639232. Its totient is φ = 10765716480.

The previous prime is 22947542671. The next prime is 22947542677. The reversal of 22947542672 is 27624574922.

It is a self number, because there is not a number n which added to its sum of digits gives 22947542672.

It is not an unprimeable number, because it can be changed into a prime (22947542671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5632028 + ... + 5636100.

Almost surely, 2^22947542672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22947542672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23650319616).

22947542672 is an abundant number, since it is smaller than the sum of its proper divisors (24353096560).

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

22947542672 is a wasteful number, since it uses less digits than its factorization.

22947542672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4456 (or 4450 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 50.

The spelling of 22947542672 in words is "twenty-two billion, nine hundred forty-seven million, five hundred forty-two thousand, six hundred seventy-two".