22146947772 has 48 divisors (see below), whose sum is σ = 53139330720. Its totient is φ = 7173798912.

The previous prime is 22146947749. The next prime is 22146947791. The reversal of 22146947772 is 27774964122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328368 + ... + 390024.

It is an arithmetic number, because the mean of its divisors is an integer number (1107069390).

Almost surely, 2^22146947772 is an apocalyptic number.

It is an amenable number.

22146947772 is an abundant number, since it is smaller than the sum of its proper divisors (30992382948).

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

22146947772 is a wasteful number, since it uses less digits than its factorization.

22146947772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62510 (or 62508 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 51.

The spelling of 22146947772 in words is "twenty-two billion, one hundred forty-six million, nine hundred forty-seven thousand, seven hundred seventy-two".