23609998786181 has 4 divisors (see below), whose sum is σ = 23610856454700. Its totient is φ = 23609141117664.

The previous prime is 23609998786151. The next prime is 23609998786189. The reversal of 23609998786181 is 18168789990632.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5598590105956 + 18011408680225 = 2366134^2 + 4243985^2 .

It is a cyclic number.

It is not a de Polignac number, because 23609998786181 - 2¹⁰ = 23609998785157 is a prime.

It is a super-2 number, since 2×23609998786181² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23609998786189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428792966 + ... + 428848023.

It is an arithmetic number, because the mean of its divisors is an integer number (5902714113675).

Almost surely, 2^{23609998786181} is an apocalyptic number.

It is an amenable number.

23609998786181 is a deficient number, since it is larger than the sum of its proper divisors (857668519).

23609998786181 is an equidigital number, since it uses as much as digits as its factorization.

23609998786181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857668518.

The product of its (nonzero) digits is 564350976, while the sum is 77.

The spelling of 23609998786181 in words is "twenty-three trillion, six hundred nine billion, nine hundred ninety-eight million, seven hundred eighty-six thousand, one hundred eighty-one".