22191831552 has 160 divisors (see below), whose sum is σ = 68289718464. Its totient is φ = 6329139200.

The previous prime is 22191831551. The next prime is 22191831553. The reversal of 22191831552 is 25513819122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22191831551) and next prime (22191831553).

It is a self number, because there is not a number n which added to its sum of digits gives 22191831552.

It is not an unprimeable number, because it can be changed into a prime (22191831551) 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, 248602 + ... + 325862.

Almost surely, 2^22191831552 is an apocalyptic number.

22191831552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22191831552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34144859232).

22191831552 is an abundant number, since it is smaller than the sum of its proper divisors (46097886912).

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

22191831552 is a wasteful number, since it uses less digits than its factorization.

22191831552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77310 (or 77294 counting only the distinct ones).

The product of its digits is 43200, while the sum is 39.

The spelling of 22191831552 in words is "twenty-two billion, one hundred ninety-one million, eight hundred thirty-one thousand, five hundred fifty-two".