180320681718845 has 16 divisors (see below), whose sum is σ = 218787704069760. Its totient is φ = 142658026104000.

The previous prime is 180320681718833. The next prime is 180320681718871. The reversal of 180320681718845 is 548817186023081.

It is not a de Polignac number, because 180320681718845 - 2³⁸ = 180045803811901 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212371691 + ... + 213219080.

It is an arithmetic number, because the mean of its divisors is an integer number (13674231504360).

Almost surely, 2^{180320681718845} is an apocalyptic number.

It is an amenable number.

180320681718845 is a deficient number, since it is larger than the sum of its proper divisors (38467022350915).

180320681718845 is a wasteful number, since it uses less digits than its factorization.

180320681718845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425591716.

The product of its (nonzero) digits is 20643840, while the sum is 62.

The spelling of 180320681718845 in words is "one hundred eighty trillion, three hundred twenty billion, six hundred eighty-one million, seven hundred eighteen thousand, eight hundred forty-five".