3813636477072 has 80 divisors (see below), whose sum is σ = 9934284165120. Its totient is φ = 1260602426496.

The previous prime is 3813636477067. The next prime is 3813636477113. The reversal of 3813636477072 is 2707746363183.

It is a happy 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, 5426773 + ... + 6089099.

It is an arithmetic number, because the mean of its divisors is an integer number (124178552064).

Almost surely, 2^{3813636477072} is an apocalyptic number.

It is an amenable number.

3813636477072 is an abundant number, since it is smaller than the sum of its proper divisors (6120647688048).

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

3813636477072 is a wasteful number, since it uses less digits than its factorization.

3813636477072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663340 (or 663334 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 57.

The spelling of 3813636477072 in words is "three trillion, eight hundred thirteen billion, six hundred thirty-six million, four hundred seventy-seven thousand, seventy-two".