180396821627 has 4 divisors (see below), whose sum is σ = 196796532696. Its totient is φ = 163997110560.

The previous prime is 180396821593. The next prime is 180396821707. The reversal of 180396821627 is 726128693081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 180396821627 - 2²⁸ = 180128386171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180396823627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8199855518 + ... + 8199855539.

It is an arithmetic number, because the mean of its divisors is an integer number (49199133174).

Almost surely, 2^180396821627 is an apocalyptic number.

180396821627 is a deficient number, since it is larger than the sum of its proper divisors (16399711069).

180396821627 is a wasteful number, since it uses less digits than its factorization.

180396821627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16399711068.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 180396821627 in words is "one hundred eighty billion, three hundred ninety-six million, eight hundred twenty-one thousand, six hundred twenty-seven".