23261751880 has 16 divisors (see below), whose sum is σ = 52338941820. Its totient is φ = 9304700736.

The previous prime is 23261751847. The next prime is 23261751881. The reversal of 23261751880 is 8815716232.

It can be written as a sum of positive squares in 2 ways, for example, as 20409551044 + 2852200836 = 142862^2 + 53406^2 .

It is a super-2 number, since 2×23261751880² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23261751881) 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 3 ways as a sum of consecutive naturals, for example, 290771859 + ... + 290771938.

Almost surely, 2^23261751880 is an apocalyptic number.

23261751880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23261751880 is an abundant number, since it is smaller than the sum of its proper divisors (29077189940).

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

23261751880 is a wasteful number, since it uses less digits than its factorization.

23261751880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581543808 (or 581543804 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 23261751880 in words is "twenty-three billion, two hundred sixty-one million, seven hundred fifty-one thousand, eight hundred eighty".