23869856857 has 16 divisors (see below), whose sum is σ = 30178980864. Its totient is φ = 18337914000.

The previous prime is 23869856827. The next prime is 23869856863. The reversal of 23869856857 is 75865896832.

It is not a de Polignac number, because 23869856857 - 2¹⁹ = 23869332569 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23869856792 and 23869856801.

It is not an unprimeable number, because it can be changed into a prime (23869856827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2177619 + ... + 2188552.

It is an arithmetic number, because the mean of its divisors is an integer number (1886186304).

Almost surely, 2^23869856857 is an apocalyptic number.

It is an amenable number.

23869856857 is a deficient number, since it is larger than the sum of its proper divisors (6309124007).

23869856857 is a wasteful number, since it uses less digits than its factorization.

23869856857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4366260.

The product of its digits is 174182400, while the sum is 67.

The spelling of 23869856857 in words is "twenty-three billion, eight hundred sixty-nine million, eight hundred fifty-six thousand, eight hundred fifty-seven".