23244051681 has 20 divisors (see below), whose sum is σ = 35661048852. Its totient is φ = 15077220768.

The previous prime is 23244051673. The next prime is 23244051757. The reversal of 23244051681 is 18615044232.

It is a happy number.

23244051681 is a `hidden beast` number, since 2 + 3 + 24 + 40 + 516 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20798254656 + 2445797025 = 144216^2 + 49455^2 .

It is not a de Polignac number, because 23244051681 - 2³ = 23244051673 is a prime.

It is a super-2 number, since 2×23244051681² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23244051631) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3874890 + ... + 3880883.

Almost surely, 2^23244051681 is an apocalyptic number.

It is an amenable number.

23244051681 is a deficient number, since it is larger than the sum of its proper divisors (12416997171).

23244051681 is an equidigital number, since it uses as much as digits as its factorization.

23244051681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7755822 (or 7755813 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

It can be divided in two parts, 232440516 and 81, that multiplied together give a square (18827681796 = 137214²).

The spelling of 23244051681 in words is "twenty-three billion, two hundred forty-four million, fifty-one thousand, six hundred eighty-one".