1680222681530 has 8 divisors (see below), whose sum is σ = 3024400826772. Its totient is φ = 672089072608.

The previous prime is 1680222681523. The next prime is 1680222681563. The reversal of 1680222681530 is 351862220861.

It can be written as a sum of positive squares in 2 ways, for example, as 1660265751169 + 19956930361 = 1288513^2 + 141269^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 84011134067 + ... + 84011134086.

Almost surely, 2^{1680222681530} is an apocalyptic number.

1680222681530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1680222681530 is a deficient number, since it is larger than the sum of its proper divisors (1344178145242).

1680222681530 is a wasteful number, since it uses less digits than its factorization.

1680222681530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168022268160.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 1680222681530 in words is "one trillion, six hundred eighty billion, two hundred twenty-two million, six hundred eighty-one thousand, five hundred thirty".