22252017816 has 128 divisors (see below), whose sum is σ = 70680038400. Its totient is φ = 6354236160.

The previous prime is 22252017787. The next prime is 22252017817. The reversal of 22252017816 is 61871025222.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22252017817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4217356 + ... + 4222628.

It is an arithmetic number, because the mean of its divisors is an integer number (552187800).

Almost surely, 2^22252017816 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 22252017816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35340019200).

22252017816 is an abundant number, since it is smaller than the sum of its proper divisors (48428020584).

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

22252017816 is a wasteful number, since it uses less digits than its factorization.

22252017816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8086 (or 8076 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 22252017816 in words is "twenty-two billion, two hundred fifty-two million, seventeen thousand, eight hundred sixteen".