17680403677 has 2 divisors, whose sum is σ = 17680403678. Its totient is φ = 17680403676.

The previous prime is 17680403651. The next prime is 17680403737. The reversal of 17680403677 is 77630408671.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16174498041 + 1505905636 = 127179^2 + 38806^2 .

It is a cyclic number.

It is not a de Polignac number, because 17680403677 - 2⁷ = 17680403549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17680403677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17680403977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8840201838 + 8840201839.

It is an arithmetic number, because the mean of its divisors is an integer number (8840201839).

Almost surely, 2^17680403677 is an apocalyptic number.

It is an amenable number.

17680403677 is a deficient number, since it is larger than the sum of its proper divisors (1).

17680403677 is an equidigital number, since it uses as much as digits as its factorization.

17680403677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1185408, while the sum is 49.

The spelling of 17680403677 in words is "seventeen billion, six hundred eighty million, four hundred three thousand, six hundred seventy-seven".