23665421107 has 8 divisors (see below), whose sum is σ = 23700975056. Its totient is φ = 23629892832.

The previous prime is 23665421099. The next prime is 23665421191. The reversal of 23665421107 is 70112456632.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23665421107 - 2³ = 23665421099 is a prime.

It is a super-2 number, since 2×23665421107² (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 (23665421407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2544688 + ... + 2553970.

It is an arithmetic number, because the mean of its divisors is an integer number (2962621882).

Almost surely, 2^23665421107 is an apocalyptic number.

23665421107 is a deficient number, since it is larger than the sum of its proper divisors (35553949).

23665421107 is an equidigital number, since it uses as much as digits as its factorization.

23665421107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12837.

The product of its (nonzero) digits is 60480, while the sum is 37.

Adding to 23665421107 its reverse (70112456632), we get a palindrome (93777877739).

The spelling of 23665421107 in words is "twenty-three billion, six hundred sixty-five million, four hundred twenty-one thousand, one hundred seven".