23393784861 has 24 divisors (see below), whose sum is σ = 34312378880. Its totient is φ = 15356311776.

The previous prime is 23393784839. The next prime is 23393784871. The reversal of 23393784861 is 16848739332.

23393784861 is a `hidden beast` number, since 2 + 3 + 3 + 93 + 78 + 486 + 1 = 666.

It is not a de Polignac number, because 23393784861 - 2¹⁸ = 23393522717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23393784798 and 23393784807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23393784871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216111 + ... + 305763.

Almost surely, 2^23393784861 is an apocalyptic number.

It is an amenable number.

23393784861 is a deficient number, since it is larger than the sum of its proper divisors (10918594019).

23393784861 is a wasteful number, since it uses less digits than its factorization.

23393784861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90105 (or 90102 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The spelling of 23393784861 in words is "twenty-three billion, three hundred ninety-three million, seven hundred eighty-four thousand, eight hundred sixty-one".