23953415693 has 4 divisors (see below), whose sum is σ = 23989764480. Its totient is φ = 23917066908.

The previous prime is 23953415687. The next prime is 23953415713. The reversal of 23953415693 is 39651435932.

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 a de Polignac number, because none of the positive numbers 2^k-23953415693 is a prime.

It is a super-2 number, since 2×23953415693² (a number of 22 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 (23953415683) 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, 18173405 + ... + 18174722.

It is an arithmetic number, because the mean of its divisors is an integer number (5997441120).

Almost surely, 2^23953415693 is an apocalyptic number.

It is an amenable number.

23953415693 is a deficient number, since it is larger than the sum of its proper divisors (36348787).

23953415693 is an equidigital number, since it uses as much as digits as its factorization.

23953415693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36348786.

The product of its digits is 2624400, while the sum is 50.

The spelling of 23953415693 in words is "twenty-three billion, nine hundred fifty-three million, four hundred fifteen thousand, six hundred ninety-three".