22520774640 has 320 divisors, whose sum is σ = 86106488832. Its totient is φ = 4741632000.

The previous prime is 22520774623. The next prime is 22520774657. The reversal of 22520774640 is 4647702522.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22520774623) and next prime (22520774657).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15309105 + ... + 15310575.

Almost surely, 2^22520774640 is an apocalyptic number.

22520774640 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 22520774640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43053244416).

22520774640 is an abundant number, since it is smaller than the sum of its proper divisors (63585714192).

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

22520774640 is a wasteful number, since it uses less digits than its factorization.

22520774640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208 (or 2202 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 39.

The spelling of 22520774640 in words is "twenty-two billion, five hundred twenty million, seven hundred seventy-four thousand, six hundred forty".