180083621615845 has 16 divisors (see below), whose sum is σ = 221371664702832. Its totient is φ = 140552703152640.

The previous prime is 180083621615831. The next prime is 180083621615939. The reversal of 180083621615845 is 548516126380081.

It can be written as a sum of positive squares in 8 ways, for example, as 88706578785889 + 91377042829956 = 9418417^2 + 9559134^2 .

It is not a de Polignac number, because 180083621615845 - 2²⁷ = 180083487398117 is a prime.

It is a super-2 number, since 2×180083621615845² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 180083621615845.

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, 98530339 + ... + 100341391.

It is an arithmetic number, because the mean of its divisors is an integer number (13835729043927).

Almost surely, 2^{180083621615845} is an apocalyptic number.

It is an amenable number.

180083621615845 is a deficient number, since it is larger than the sum of its proper divisors (41288043086987).

180083621615845 is a wasteful number, since it uses less digits than its factorization.

180083621615845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296152.

The product of its (nonzero) digits is 11059200, while the sum is 58.

The spelling of 180083621615845 in words is "one hundred eighty trillion, eighty-three billion, six hundred twenty-one million, six hundred fifteen thousand, eight hundred forty-five".