22161881748 has 48 divisors (see below), whose sum is σ = 54030049920. Its totient is φ = 7056850944.

The previous prime is 22161881747. The next prime is 22161881761. The reversal of 22161881748 is 84718816122.

It is a super-2 number, since 2×22161881748² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22161881697 and 22161881706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22161881747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160036 + ... + 264452.

It is an arithmetic number, because the mean of its divisors is an integer number (1125626040).

Almost surely, 2^22161881748 is an apocalyptic number.

It is an amenable number.

22161881748 is an abundant number, since it is smaller than the sum of its proper divisors (31868168172).

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

22161881748 is a wasteful number, since it uses less digits than its factorization.

22161881748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105216 (or 105214 counting only the distinct ones).

The product of its digits is 344064, while the sum is 48.

The spelling of 22161881748 in words is "twenty-two billion, one hundred sixty-one million, eight hundred eighty-one thousand, seven hundred forty-eight".