23323864781 has 16 divisors (see below), whose sum is σ = 27140164224. Its totient is φ = 19631061504.

The previous prime is 23323864769. The next prime is 23323864783. The reversal of 23323864781 is 18746832332.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23323864781 is a prime.

It is a super-2 number, since 2×23323864781² (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 (23323864783) 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, 15461 + ... + 216533.

It is an arithmetic number, because the mean of its divisors is an integer number (1696260264).

Almost surely, 2^23323864781 is an apocalyptic number.

It is an amenable number.

23323864781 is a deficient number, since it is larger than the sum of its proper divisors (3816299443).

23323864781 is a wasteful number, since it uses less digits than its factorization.

23323864781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201380.

The product of its digits is 1161216, while the sum is 47.

The spelling of 23323864781 in words is "twenty-three billion, three hundred twenty-three million, eight hundred sixty-four thousand, seven hundred eighty-one".