180249653009 has 4 divisors (see below), whose sum is σ = 180324231204. Its totient is φ = 180175074816.

The previous prime is 180249652967. The next prime is 180249653021. The reversal of 180249653009 is 900356942081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900356942081 = 4643 ⋅193917067.

It can be written as a sum of positive squares in 2 ways, for example, as 87599424784 + 92650228225 = 295972^2 + 304385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180249653009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180249623009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37285472 + ... + 37290305.

It is an arithmetic number, because the mean of its divisors is an integer number (45081057801).

Almost surely, 2^180249653009 is an apocalyptic number.

It is an amenable number.

180249653009 is a deficient number, since it is larger than the sum of its proper divisors (74578195).

180249653009 is an equidigital number, since it uses as much as digits as its factorization.

180249653009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74578194.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 180249653009 in words is "one hundred eighty billion, two hundred forty-nine million, six hundred fifty-three thousand, nine".