22143057156 has 168 divisors, whose sum is σ = 63717528000. Its totient is φ = 6674374080.

The previous prime is 22143057133. The next prime is 22143057163. The reversal of 22143057156 is 65175034122.

22143057156 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 30 + 571 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22143057156.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 6381390 + ... + 6384858.

It is an arithmetic number, because the mean of its divisors is an integer number (379271000).

Almost surely, 2^22143057156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22143057156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31858764000).

22143057156 is an abundant number, since it is smaller than the sum of its proper divisors (41574470844).

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

22143057156 is a wasteful number, since it uses less digits than its factorization.

22143057156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701 (or 3684 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 22143057156 in words is "twenty-two billion, one hundred forty-three million, fifty-seven thousand, one hundred fifty-six".