180063586921 has 3 divisors (see below), whose sum is σ = 180064011261. Its totient is φ = 180063162582.

The previous prime is 180063586903. The next prime is 180063586931. The reversal of 180063586921 is 129685360081.

The square root of 180063586921 is 424339.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 180063586921 - 2¹³ = 180063578729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180063586931) 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 2 ways as a sum of consecutive naturals, for example, 212170 + ... + 636508.

It is an arithmetic number, because the mean of its divisors is an integer number (60021337087).

Almost surely, 2^180063586921 is an apocalyptic number.

180063586921 is the 424339-th square number.

180063586921 is the 212170-th centered octagonal number.

It is an amenable number.

180063586921 is a deficient number, since it is larger than the sum of its proper divisors (424340).

180063586921 is an frugal number, since it uses more digits than its factorization.

180063586921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848678 (or 424339 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

Multiplying 180063586921 by its sum of digits (49), we get a square (8823115759129 = 2970373²).

The spelling of 180063586921 in words is "one hundred eighty billion, sixty-three million, five hundred eighty-six thousand, nine hundred twenty-one".