17980419679 has 4 divisors (see below), whose sum is σ = 17980702920. Its totient is φ = 17980136440.

The previous prime is 17980419577. The next prime is 17980419683. The reversal of 17980419679 is 97691408971.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97691408971 = 13 ⋅7514723767.

It is a cyclic number.

It is not a de Polignac number, because 17980419679 - 2⁷ = 17980419551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17980419689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2469 + ... + 189649.

It is an arithmetic number, because the mean of its divisors is an integer number (4495175730).

Almost surely, 2^17980419679 is an apocalyptic number.

17980419679 is a deficient number, since it is larger than the sum of its proper divisors (283241).

17980419679 is an equidigital number, since it uses as much as digits as its factorization.

17980419679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283240.

The product of its (nonzero) digits is 6858432, while the sum is 61.

The spelling of 17980419679 in words is "seventeen billion, nine hundred eighty million, four hundred nineteen thousand, six hundred seventy-nine".