17980344365425 has 24 divisors (see below), whose sum is σ = 24010924756280. Its totient is φ = 13277654784000.

The previous prime is 17980344365419. The next prime is 17980344365441. The reversal of 17980344365425 is 52456344308971.

It can be written as a sum of positive squares in 12 ways, for example, as 11214789624801 + 6765554740624 = 3348849^2 + 2601068^2 .

It is not a de Polignac number, because 17980344365425 - 2¹⁹ = 17980343841137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39491575 + ... + 39944275.

It is a 1-persistent number, because it is pandigital, but 2⋅17980344365425 = 35960688730850 is not.

Almost surely, 2^{17980344365425} is an apocalyptic number.

It is an amenable number.

17980344365425 is a deficient number, since it is larger than the sum of its proper divisors (6030580390855).

17980344365425 is a wasteful number, since it uses less digits than its factorization.

17980344365425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574933 (or 574928 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 61.

The spelling of 17980344365425 in words is "seventeen trillion, nine hundred eighty billion, three hundred forty-four million, three hundred sixty-five thousand, four hundred twenty-five".