22215000654 has 128 divisors (see below), whose sum is σ = 62146805760. Its totient is φ = 5713999200.

The previous prime is 22215000649. The next prime is 22215000667. The reversal of 22215000654 is 45600051222.

22215000654 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 5 + 0 + 0 + 0 + 654 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 402339 + ... + 454209.

It is an arithmetic number, because the mean of its divisors is an integer number (485521920).

Almost surely, 2^22215000654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22215000654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31073402880).

22215000654 is an abundant number, since it is smaller than the sum of its proper divisors (39931805106).

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

22215000654 is a wasteful number, since it uses less digits than its factorization.

22215000654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52003 (or 51997 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 22215000654 its reverse (45600051222), we get a palindrome (67815051876).

The spelling of 22215000654 in words is "twenty-two billion, two hundred fifteen million, six hundred fifty-four", and thus it is an aban number.