23112585280 has 112 divisors (see below), whose sum is σ = 58531932720. Its totient is φ = 8662745088.

The previous prime is 23112585257. The next prime is 23112585323. The reversal of 23112585280 is 8258521132.

It can be written as a sum of positive squares in 8 ways, for example, as 127599616 + 22984985664 = 11296^2 + 151608^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1236484 + ... + 1255036.

Almost surely, 2^23112585280 is an apocalyptic number.

23112585280 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 23112585280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29265966360).

23112585280 is an abundant number, since it is smaller than the sum of its proper divisors (35419347440).

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

23112585280 is a wasteful number, since it uses less digits than its factorization.

23112585280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18816 (or 18806 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The spelling of 23112585280 in words is "twenty-three billion, one hundred twelve million, five hundred eighty-five thousand, two hundred eighty".