22756321280 has 768 divisors, whose sum is σ = 75479040000. Its totient is φ = 6502809600.

The previous prime is 22756321277. The next prime is 22756321297. The reversal of 22756321280 is 8212365722.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 734074865 + ... + 734074895.

It is an arithmetic number, because the mean of its divisors is an integer number (98280000).

Almost surely, 2^22756321280 is an apocalyptic number.

22756321280 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 22756321280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37739520000).

22756321280 is an abundant number, since it is smaller than the sum of its proper divisors (52722718720).

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

22756321280 is a wasteful number, since it uses less digits than its factorization.

22756321280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 22756321280 in words is "twenty-two billion, seven hundred fifty-six million, three hundred twenty-one thousand, two hundred eighty".