22015534000 has 80 divisors (see below), whose sum is σ = 53265715776. Its totient is φ = 8800896000.

The previous prime is 22015533989. The next prime is 22015534001. The reversal of 22015534000 is 43551022.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (22015534001) 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, 6240237 + ... + 6243763.

Almost surely, 2^22015534000 is an apocalyptic number.

22015534000 is a gapful number since it is divisible by the number (20) 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 22015534000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26632857888).

22015534000 is an abundant number, since it is smaller than the sum of its proper divisors (31250181776).

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

22015534000 is a wasteful number, since it uses less digits than its factorization.

22015534000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671 (or 6655 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The spelling of 22015534000 in words is "twenty-two billion, fifteen million, five hundred thirty-four thousand".