23702757849 has 81 divisors (see below), whose sum is σ = 37652810013. Its totient is φ = 14366035584.

The previous prime is 23702757839. The next prime is 23702757851. The reversal of 23702757849 is 94875720732.

The square root of 23702757849 is 153957.

It is a perfect power (a square), and thus also a powerful number.

23702757849 is a `hidden beast` number, since 2 + 3 + 7 + 0 + 27 + 578 + 49 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5912533449 + 17790224400 = 76893^2 + 133380^2 .

It is not a de Polignac number, because 23702757849 - 2⁵ = 23702757817 is a prime.

It is a super-2 number, since 2×23702757849² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23702757795 and 23702757804.

It is not an unprimeable number, because it can be changed into a prime (23702757829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 324695277 + ... + 324695349.

Almost surely, 2^23702757849 is an apocalyptic number.

23702757849 is the 153957-th square number.

23702757849 is the 76979-th centered octagonal number.

It is an amenable number.

23702757849 is a deficient number, since it is larger than the sum of its proper divisors (13950052164).

23702757849 is an equidigital number, since it uses as much as digits as its factorization.

23702757849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 54.

The spelling of 23702757849 in words is "twenty-three billion, seven hundred two million, seven hundred fifty-seven thousand, eight hundred forty-nine".