3999824660636 has 48 divisors (see below), whose sum is σ = 8393074808832. Its totient is φ = 1631718129600.

The previous prime is 3999824660561. The next prime is 3999824660641. The reversal of 3999824660636 is 6360664289993.

It is a self number, because there is not a number n which added to its sum of digits gives 3999824660636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37718306 + ... + 37824201.

It is an arithmetic number, because the mean of its divisors is an integer number (174855725184).

Almost surely, 2^{3999824660636} is an apocalyptic number.

It is an amenable number.

3999824660636 is an abundant number, since it is smaller than the sum of its proper divisors (4393250148196).

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

3999824660636 is a wasteful number, since it uses less digits than its factorization.

3999824660636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75542610 (or 75542608 counting only the distinct ones).

The product of its (nonzero) digits is 544195584, while the sum is 71.

The spelling of 3999824660636 in words is "three trillion, nine hundred ninety-nine billion, eight hundred twenty-four million, six hundred sixty thousand, six hundred thirty-six".