22720551000 has 512 divisors, whose sum is σ = 88590827520. Its totient is φ = 4727808000.

The previous prime is 22720550953. The next prime is 22720551041. The reversal of 22720551000 is 15502722.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11065974 + ... + 11068026.

It is an arithmetic number, because the mean of its divisors is an integer number (173028960).

Almost surely, 2^22720551000 is an apocalyptic number.

22720551000 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 22720551000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44295413760).

22720551000 is an abundant number, since it is smaller than the sum of its proper divisors (65870276520).

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

22720551000 is a wasteful number, since it uses less digits than its factorization.

22720551000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132 (or 2118 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The spelling of 22720551000 in words is "twenty-two billion, seven hundred twenty million, five hundred fifty-one thousand".