22553155540 has 96 divisors (see below), whose sum is σ = 49972204800. Its totient is φ = 8533324800.

The previous prime is 22553155529. The next prime is 22553155549. The reversal of 22553155540 is 4555135522.

It is a super-2 number, since 2×22553155540² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22553155540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22553155549) 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, 19259155 + ... + 19260325.

It is an arithmetic number, because the mean of its divisors is an integer number (520543800).

Almost surely, 2^22553155540 is an apocalyptic number.

22553155540 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 22553155540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24986102400).

22553155540 is an abundant number, since it is smaller than the sum of its proper divisors (27419049260).

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

22553155540 is a wasteful number, since it uses less digits than its factorization.

22553155540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633 (or 1631 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 37.

The spelling of 22553155540 in words is "twenty-two billion, five hundred fifty-three million, one hundred fifty-five thousand, five hundred forty".