180042971601 has 16 divisors (see below), whose sum is σ = 250634916864. Its totient is φ = 114745684944.

The previous prime is 180042971557. The next prime is 180042971609. The reversal of 180042971601 is 106179240081.

It is not a de Polignac number, because 180042971601 - 2²¹ = 180040874449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 180042971601.

It is not an unprimeable number, because it can be changed into a prime (180042971609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606781 + ... + 853386.

It is an arithmetic number, because the mean of its divisors is an integer number (15664682304).

Almost surely, 2^180042971601 is an apocalyptic number.

It is an amenable number.

180042971601 is a deficient number, since it is larger than the sum of its proper divisors (70591945263).

180042971601 is a wasteful number, since it uses less digits than its factorization.

180042971601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461980.

The product of its (nonzero) digits is 24192, while the sum is 39.

The spelling of 180042971601 in words is "one hundred eighty billion, forty-two million, nine hundred seventy-one thousand, six hundred one".