3985799668836 has 24 divisors (see below), whose sum is σ = 9305415317184. Its totient is φ = 1327854733920.

The previous prime is 3985799668817. The next prime is 3985799668849. The reversal of 3985799668836 is 6388669975893.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93122175 + ... + 93164966.

It is an arithmetic number, because the mean of its divisors is an integer number (387725638216).

Almost surely, 2^{3985799668836} is an apocalyptic number.

It is an amenable number.

3985799668836 is an abundant number, since it is smaller than the sum of its proper divisors (5319615648348).

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

3985799668836 is a wasteful number, since it uses less digits than its factorization.

3985799668836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186288931 (or 186288929 counting only the distinct ones).

The product of its digits is 25395793920, while the sum is 87.

The spelling of 3985799668836 in words is "three trillion, nine hundred eighty-five billion, seven hundred ninety-nine million, six hundred sixty-eight thousand, eight hundred thirty-six".