22131861488 has 20 divisors (see below), whose sum is σ = 46778707608. Its totient is φ = 10059936960.

The previous prime is 22131861487. The next prime is 22131861551. The reversal of 22131861488 is 88416813122.

It is a super-3 number, since 3×22131861488³ (a number of 32 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131861487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62874431 + ... + 62874782.

Almost surely, 2^22131861488 is an apocalyptic number.

It is an amenable number.

22131861488 is an abundant number, since it is smaller than the sum of its proper divisors (24646846120).

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

22131861488 is a wasteful number, since it uses less digits than its factorization.

22131861488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125749232 (or 125749226 counting only the distinct ones).

The product of its digits is 147456, while the sum is 44.

The spelling of 22131861488 in words is "twenty-two billion, one hundred thirty-one million, eight hundred sixty-one thousand, four hundred eighty-eight".