180934649966 has 32 divisors (see below), whose sum is σ = 326645256960. Its totient is φ = 73429194816.

The previous prime is 180934649957. The next prime is 180934649981. The reversal of 180934649966 is 669946439081.

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, 445010 + ... + 748266.

It is an arithmetic number, because the mean of its divisors is an integer number (10207664280).

Almost surely, 2^180934649966 is an apocalyptic number.

180934649966 is a deficient number, since it is larger than the sum of its proper divisors (145710606994).

180934649966 is a wasteful number, since it uses less digits than its factorization.

180934649966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305528.

The product of its (nonzero) digits is 60466176, while the sum is 65.

The spelling of 180934649966 in words is "one hundred eighty billion, nine hundred thirty-four million, six hundred forty-nine thousand, nine hundred sixty-six".