23691848857 has 4 divisors (see below), whose sum is σ = 23878398976. Its totient is φ = 23505298740.

The previous prime is 23691848849. The next prime is 23691848863. The reversal of 23691848857 is 75884819632.

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 23691848857 - 2³ = 23691848849 is a prime.

It is a super-2 number, since 2×23691848857² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23691848795 and 23691848804.

It is not an unprimeable number, because it can be changed into a prime (23691848867) 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, 93274869 + ... + 93275122.

It is an arithmetic number, because the mean of its divisors is an integer number (5969599744).

Almost surely, 2^23691848857 is an apocalyptic number.

It is an amenable number.

23691848857 is a deficient number, since it is larger than the sum of its proper divisors (186550119).

23691848857 is a wasteful number, since it uses less digits than its factorization.

23691848857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186550118.

The product of its digits is 23224320, while the sum is 61.

The spelling of 23691848857 in words is "twenty-three billion, six hundred ninety-one million, eight hundred forty-eight thousand, eight hundred fifty-seven".