22161456852 has 24 divisors (see below), whose sum is σ = 51751173600. Its totient is φ = 7381279776.

The previous prime is 22161456851. The next prime is 22161456859. The reversal of 22161456852 is 25865416122.

It is a super-2 number, since 2×22161456852² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22161456851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 718327 + ... + 748542.

It is an arithmetic number, because the mean of its divisors is an integer number (2156298900).

Almost surely, 2^22161456852 is an apocalyptic number.

It is an amenable number.

22161456852 is an abundant number, since it is smaller than the sum of its proper divisors (29589716748).

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

22161456852 is a wasteful number, since it uses less digits than its factorization.

22161456852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468135 (or 1468133 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The spelling of 22161456852 in words is "twenty-two billion, one hundred sixty-one million, four hundred fifty-six thousand, eight hundred fifty-two".