1687943572480 has 132 divisors (see below), whose sum is σ = 4450650447600. Its totient is φ = 613797437440.

The previous prime is 1687943572463. The next prime is 1687943572519. The reversal of 1687943572480 is 842753497861.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 742780 + ... + 1981819.

It is a 1-persistent number, because it is pandigital, but 2⋅1687943572480 = 3375887144960 is not.

Almost surely, 2^{1687943572480} is an apocalyptic number.

1687943572480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1687943572480 is an abundant number, since it is smaller than the sum of its proper divisors (2762706875120).

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

1687943572480 is a wasteful number, since it uses less digits than its factorization.

1687943572480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2724646 (or 2724617 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 64.

The spelling of 1687943572480 in words is "one trillion, six hundred eighty-seven billion, nine hundred forty-three million, five hundred seventy-two thousand, four hundred eighty".