23166970849 has 27 divisors (see below), whose sum is σ = 25908243193. Its totient is φ = 20700152000.

The previous prime is 23166970817. The next prime is 23166970867. The reversal of 23166970849 is 94807966132.

The square root of 23166970849 is 152207.

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

It can be written as a sum of positive squares in 4 ways, for example, as 9022150225 + 14144820624 = 94985^2 + 118932^2 .

It is not a de Polignac number, because 23166970849 - 2⁵ = 23166970817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23166970849.

It is not an unprimeable number, because it can be changed into a prime (23166070849) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 169101909 + ... + 169102045.

Almost surely, 2^23166970849 is an apocalyptic number.

23166970849 is the 152207-th square number.

23166970849 is the 76104-th centered octagonal number.

It is an amenable number.

23166970849 is a deficient number, since it is larger than the sum of its proper divisors (2741272344).

23166970849 is an equidigital number, since it uses as much as digits as its factorization.

23166970849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 23166970849 in words is "twenty-three billion, one hundred sixty-six million, nine hundred seventy thousand, eight hundred forty-nine".