1680018021412 has 12 divisors (see below), whose sum is σ = 2947788879280. Its totient is φ = 837792627336.

The previous prime is 1680018021371. The next prime is 1680018021463. The reversal of 1680018021412 is 2141208100861.

It is a happy number.

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, 554094138 + ... + 554097169.

Almost surely, 2^{1680018021412} is an apocalyptic number.

It is an amenable number.

1680018021412 is a deficient number, since it is larger than the sum of its proper divisors (1267770857868).

1680018021412 is a wasteful number, since it uses less digits than its factorization.

1680018021412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108191690 (or 1108191688 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 34.

The spelling of 1680018021412 in words is "one trillion, six hundred eighty billion, eighteen million, twenty-one thousand, four hundred twelve".