22530504540 has 96 divisors (see below), whose sum is σ = 63973647360. Its totient is φ = 5923756800.

The previous prime is 22530504533. The next prime is 22530504547. The reversal of 22530504540 is 4540503522.

It is an interprime number because it is at equal distance from previous prime (22530504533) and next prime (22530504547).

It is a super-2 number, since 2×22530504540² (a number of 22 digits) contains 22 as substring.

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 = 22530504498 and 22530504507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22530504547) 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, 3841210 + ... + 3847070.

It is an arithmetic number, because the mean of its divisors is an integer number (666392160).

Almost surely, 2^22530504540 is an apocalyptic number.

22530504540 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 22530504540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31986823680).

22530504540 is an abundant number, since it is smaller than the sum of its proper divisors (41443142820).

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

22530504540 is a wasteful number, since it uses less digits than its factorization.

22530504540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6763 (or 6761 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The spelling of 22530504540 in words is "twenty-two billion, five hundred thirty million, five hundred four thousand, five hundred forty".