22397865120 has 192 divisors, whose sum is σ = 79386048000. Its totient is φ = 5897069568.

The previous prime is 22397865107. The next prime is 22397865121. The reversal of 22397865120 is 2156879322.

22397865120 is a `hidden beast` number, since 22 + 39 + 7 + 86 + 512 + 0 = 666.

It is a super-2 number, since 2×22397865120² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (22397865121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 308466 + ... + 374094.

It is an arithmetic number, because the mean of its divisors is an integer number (413469000).

Almost surely, 2^22397865120 is an apocalyptic number.

22397865120 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 22397865120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39693024000).

22397865120 is an abundant number, since it is smaller than the sum of its proper divisors (56988182880).

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

22397865120 is a wasteful number, since it uses less digits than its factorization.

22397865120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65732 (or 65718 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 22397865120 in words is "twenty-two billion, three hundred ninety-seven million, eight hundred sixty-five thousand, one hundred twenty".