1686933244240 has 40 divisors (see below), whose sum is σ = 4013331889248. Its totient is φ = 659080894080.

The previous prime is 1686933244231. The next prime is 1686933244279. The reversal of 1686933244240 is 424423396861.

It is a tau number, because it is divible by the number of its divisors (40).

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, 245190346 + ... + 245197225.

Almost surely, 2^{1686933244240} is an apocalyptic number.

1686933244240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1686933244240 is an abundant number, since it is smaller than the sum of its proper divisors (2326398645008).

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

1686933244240 is a wasteful number, since it uses less digits than its factorization.

1686933244240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490387627 (or 490387621 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 52.

The spelling of 1686933244240 in words is "one trillion, six hundred eighty-six billion, nine hundred thirty-three million, two hundred forty-four thousand, two hundred forty".