22040258520 has 256 divisors, whose sum is σ = 76751216640. Its totient is φ = 4959387648.

The previous prime is 22040258509. The next prime is 22040258551. The reversal of 22040258520 is 2585204022.

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

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, 18169434 + ... + 18170646.

It is an arithmetic number, because the mean of its divisors is an integer number (299809440).

Almost surely, 2^22040258520 is an apocalyptic number.

22040258520 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 22040258520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38375608320).

22040258520 is an abundant number, since it is smaller than the sum of its proper divisors (54710958120).

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

22040258520 is a wasteful number, since it uses less digits than its factorization.

22040258520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The spelling of 22040258520 in words is "twenty-two billion, forty million, two hundred fifty-eight thousand, five hundred twenty".