180418618594117 has 16 divisors (see below), whose sum is σ = 191373417011952. Its totient is φ = 169501947632640.

The previous prime is 180418618594073. The next prime is 180418618594157. The reversal of 180418618594117 is 711495816814081.

It can be written as a sum of positive squares in 8 ways, for example, as 24695323974721 + 155723294619396 = 4969439^2 + 12478914^2 .

It is a de Polignac number, because none of the positive numbers 2^k-180418618594117 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 (180418618594157) 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 15 ways as a sum of consecutive naturals, for example, 40942567 + ... + 45134587.

It is an arithmetic number, because the mean of its divisors is an integer number (11960838563247).

Almost surely, 2^{180418618594117} is an apocalyptic number.

180418618594117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

180418618594117 is a deficient number, since it is larger than the sum of its proper divisors (10954798417835).

180418618594117 is a wasteful number, since it uses less digits than its factorization.

180418618594117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4196568.

The product of its (nonzero) digits is 15482880, while the sum is 64.

The spelling of 180418618594117 in words is "one hundred eighty trillion, four hundred eighteen billion, six hundred eighteen million, five hundred ninety-four thousand, one hundred seventeen".