22143661960 has 64 divisors (see below), whose sum is σ = 56954373120. Its totient is φ = 7590309120.

The previous prime is 22143661957. The next prime is 22143661963. The reversal of 22143661960 is 6916634122.

It is an interprime number because it is at equal distance from previous prime (22143661957) and next prime (22143661963).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (22143661963) 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, 1776550 + ... + 1788970.

It is an arithmetic number, because the mean of its divisors is an integer number (889912080).

Almost surely, 2^22143661960 is an apocalyptic number.

22143661960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22143661960 is an abundant number, since it is smaller than the sum of its proper divisors (34810711160).

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

22143661960 is a wasteful number, since it uses less digits than its factorization.

22143661960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18806 (or 18802 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 22143661960 in words is "twenty-two billion, one hundred forty-three million, six hundred sixty-one thousand, nine hundred sixty".