1680280435794 has 16 divisors (see below), whose sum is σ = 3360581521920. Its totient is φ = 560090036880.

The previous prime is 1680280435759. The next prime is 1680280435811. The reversal of 1680280435794 is 4975340820861.

It is a happy 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, 322447 + ... + 1861325.

It is an arithmetic number, because the mean of its divisors is an integer number (210036345120).

It is a 1-persistent number, because it is pandigital, but 2⋅1680280435794 = 3360560871588 is not.

Almost surely, 2^{1680280435794} is an apocalyptic number.

1680280435794 is an abundant number, since it is smaller than the sum of its proper divisors (1680301086126).

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

1680280435794 is a wasteful number, since it uses less digits than its factorization.

1680280435794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720865.

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 1680280435794 in words is "one trillion, six hundred eighty billion, two hundred eighty million, four hundred thirty-five thousand, seven hundred ninety-four".