22523152440 has 64 divisors (see below), whose sum is σ = 71544137760. Its totient is φ = 5652869120.

The previous prime is 22523152433. The next prime is 22523152447. The reversal of 22523152440 is 4425132522.

It is an interprime number because it is at equal distance from previous prime (22523152433) and next prime (22523152447).

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 = 22523152398 and 22523152407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22523152447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5518341 + ... + 5522420.

Almost surely, 2^22523152440 is an apocalyptic number.

22523152440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22523152440 is an abundant number, since it is smaller than the sum of its proper divisors (49020985320).

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

22523152440 is a wasteful number, since it uses less digits than its factorization.

22523152440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11040792 (or 11040788 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 22523152440 its reverse (4425132522), we get a palindrome (26948284962).

The spelling of 22523152440 in words is "twenty-two billion, five hundred twenty-three million, one hundred fifty-two thousand, four hundred forty".