23641700681 has 4 divisors (see below), whose sum is σ = 23885429652. Its totient is φ = 23397971712.

The previous prime is 23641700659. The next prime is 23641700683. The reversal of 23641700681 is 18600714632.

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 9502350400 + 14139350281 = 97480^2 + 118909^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23641700681 is a prime.

It is a super-2 number, since 2×23641700681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23641700683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121864340 + ... + 121864533.

It is an arithmetic number, because the mean of its divisors is an integer number (5971357413).

Almost surely, 2^23641700681 is an apocalyptic number.

It is an amenable number.

23641700681 is a deficient number, since it is larger than the sum of its proper divisors (243728971).

23641700681 is an equidigital number, since it uses as much as digits as its factorization.

23641700681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243728970.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 23641700681 in words is "twenty-three billion, six hundred forty-one million, seven hundred thousand, six hundred eighty-one".