23818535641 has 4 divisors (see below), whose sum is σ = 25072142800. Its totient is φ = 22564928484.

The previous prime is 23818535633. The next prime is 23818535669. The reversal of 23818535641 is 14653581832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23818535641 - 2³ = 23818535633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23818535591 and 23818535600.

It is not an unprimeable number, because it can be changed into a prime (23818535441) 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, 626803551 + ... + 626803588.

It is an arithmetic number, because the mean of its divisors is an integer number (6268035700).

Almost surely, 2^23818535641 is an apocalyptic number.

It is an amenable number.

23818535641 is a deficient number, since it is larger than the sum of its proper divisors (1253607159).

23818535641 is a wasteful number, since it uses less digits than its factorization.

23818535641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253607158.

The product of its digits is 691200, while the sum is 46.

The spelling of 23818535641 in words is "twenty-three billion, eight hundred eighteen million, five hundred thirty-five thousand, six hundred forty-one".