22615540488 has 108 divisors (see below), whose sum is σ = 63082275165. Its totient is φ = 7319457216.

The previous prime is 22615540459. The next prime is 22615540489. The reversal of 22615540488 is 88404551622.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

22615540488 is a `hidden beast` number, since 2 + 2 + 61 + 5 + 540 + 48 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18246066084 + 4369474404 = 135078^2 + 66102^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106338.

It is a super-2 number, since 2×22615540488² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22615540489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 47213833 + ... + 47214311.

Almost surely, 2^22615540488 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 22615540488

22615540488 is an abundant number, since it is smaller than the sum of its proper divisors (40466734677).

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

22615540488 is an equidigital number, since it uses as much as digits as its factorization.

22615540488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044 (or 521 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 45.

The spelling of 22615540488 in words is "twenty-two billion, six hundred fifteen million, five hundred forty thousand, four hundred eighty-eight".