22162403640 has 256 divisors, whose sum is σ = 73120320000. Its totient is φ = 5340469248.

The previous prime is 22162403609. The next prime is 22162403663. The reversal of 22162403640 is 4630426122.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22162403598 and 22162403607.

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, 35803251 + ... + 35803869.

It is an arithmetic number, because the mean of its divisors is an integer number (285626250).

Almost surely, 2^22162403640 is an apocalyptic number.

22162403640 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 22162403640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36560160000).

22162403640 is an abundant number, since it is smaller than the sum of its proper divisors (50957916360).

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

22162403640 is a wasteful number, since it uses less digits than its factorization.

22162403640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1090 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 22162403640 its reverse (4630426122), we get a palindrome (26792829762).

The spelling of 22162403640 in words is "twenty-two billion, one hundred sixty-two million, four hundred three thousand, six hundred forty".