3638208228864 has 80 divisors (see below), whose sum is σ = 10573542714240. Its totient is φ = 1102487336960.

The previous prime is 3638208228821. The next prime is 3638208228871. The reversal of 3638208228864 is 4688228028363.

It is a junction number, because it is equal to n+sod(n) for n = 3638208228798 and 3638208228807.

It is a congruent 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, 107647884 + ... + 107681675.

It is an arithmetic number, because the mean of its divisors is an integer number (132169283928).

Almost surely, 2^{3638208228864} is an apocalyptic number.

It is an amenable number.

3638208228864 is an abundant number, since it is smaller than the sum of its proper divisors (6935334485376).

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

3638208228864 is a wasteful number, since it uses less digits than its factorization.

3638208228864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215329591 (or 215329575 counting only the distinct ones).

The product of its (nonzero) digits is 42467328, while the sum is 60.

The spelling of 3638208228864 in words is "three trillion, six hundred thirty-eight billion, two hundred eight million, two hundred twenty-eight thousand, eight hundred sixty-four".