21680081307130 has 16 divisors (see below), whose sum is σ = 39090627021600. Its totient is φ = 8657259040912.

The previous prime is 21680081307121. The next prime is 21680081307133. The reversal of 21680081307130 is 3170318008612.

It is not an unprimeable number, because it can be changed into a prime (21680081307133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1846679080 + ... + 1846690819.

It is an arithmetic number, because the mean of its divisors is an integer number (2443164188850).

Almost surely, 2^{21680081307130} is an apocalyptic number.

21680081307130 is a deficient number, since it is larger than the sum of its proper divisors (17410545714470).

21680081307130 is a wasteful number, since it uses less digits than its factorization.

21680081307130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3693370493.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 21680081307130 in words is "twenty-one trillion, six hundred eighty billion, eighty-one million, three hundred seven thousand, one hundred thirty".