1640043038888 has 16 divisors (see below), whose sum is σ = 3075096363360. Its totient is φ = 820017342000.

The previous prime is 1640043038849. The next prime is 1640043038897. The reversal of 1640043038888 is 8888303400461.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1705253 + ... + 2487563.

It is an arithmetic number, because the mean of its divisors is an integer number (192193522710).

Almost surely, 2^{1640043038888} is an apocalyptic number.

It is an amenable number.

1640043038888 is a deficient number, since it is larger than the sum of its proper divisors (1435053324472).

1640043038888 is a wasteful number, since it uses less digits than its factorization.

1640043038888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044368 (or 1044364 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 53.

The spelling of 1640043038888 in words is "one trillion, six hundred forty billion, forty-three million, thirty-eight thousand, eight hundred eighty-eight".