16680301637 has 2 divisors, whose sum is σ = 16680301638. Its totient is φ = 16680301636.

The previous prime is 16680301633. The next prime is 16680301727. The reversal of 16680301637 is 73610308661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10551603841 + 6128697796 = 102721^2 + 78286^2 .

It is a cyclic number.

It is not a de Polignac number, because 16680301637 - 2² = 16680301633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16680301594 and 16680301603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16680301633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8340150818 + 8340150819.

It is an arithmetic number, because the mean of its divisors is an integer number (8340150819).

Almost surely, 2^16680301637 is an apocalyptic number.

It is an amenable number.

16680301637 is a deficient number, since it is larger than the sum of its proper divisors (1).

16680301637 is an equidigital number, since it uses as much as digits as its factorization.

16680301637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 16680301637 in words is "sixteen billion, six hundred eighty million, three hundred one thousand, six hundred thirty-seven".