13823785836 has 48 divisors (see below), whose sum is σ = 40959367680. Its totient is φ = 3949652880.

The previous prime is 13823785783. The next prime is 13823785837. The reversal of 13823785836 is 63858732831.

13823785836 is a `hidden beast` number, since 1 + 38 + 23 + 7 + 8 + 583 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (13823785837) 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, 9141960 + ... + 9143471.

It is an arithmetic number, because the mean of its divisors is an integer number (853320160).

Almost surely, 2^13823785836 is an apocalyptic number.

It is an amenable number.

13823785836 is an abundant number, since it is smaller than the sum of its proper divisors (27135581844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13823785836 is a wasteful number, since it uses less digits than its factorization.

13823785836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18285451 (or 18285443 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 13823785836 in words is "thirteen billion, eight hundred twenty-three million, seven hundred eighty-five thousand, eight hundred thirty-six".