23783685851 has 4 divisors (see below), whose sum is σ = 23784577392. Its totient is φ = 23782794312.

The previous prime is 23783685811. The next prime is 23783685881. The reversal of 23783685851 is 15858638732.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23783685851 - 2¹⁴ = 23783669467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23783685811) 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, 404480 + ... + 459533.

It is an arithmetic number, because the mean of its divisors is an integer number (5946144348).

Almost surely, 2^23783685851 is an apocalyptic number.

23783685851 is a deficient number, since it is larger than the sum of its proper divisors (891541).

23783685851 is an equidigital number, since it uses as much as digits as its factorization.

23783685851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891540.

The product of its digits is 9676800, while the sum is 56.

The spelling of 23783685851 in words is "twenty-three billion, seven hundred eighty-three million, six hundred eighty-five thousand, eight hundred fifty-one".