540661806201 has 8 divisors (see below), whose sum is σ = 786417172704. Its totient is φ = 327673821920.

The previous prime is 540661806187. The next prime is 540661806221. The reversal of 540661806201 is 102608166045.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 540661806201 - 2⁷ = 540661806073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 540661806201.

It is not an unprimeable number, because it can be changed into a prime (540661806221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8191845516 + ... + 8191845581.

It is an arithmetic number, because the mean of its divisors is an integer number (98302146588).

Almost surely, 2^540661806201 is an apocalyptic number.

It is an amenable number.

540661806201 is a deficient number, since it is larger than the sum of its proper divisors (245755366503).

540661806201 is a wasteful number, since it uses less digits than its factorization.

540661806201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16383691111.

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 540661806201 in words is "five hundred forty billion, six hundred sixty-one million, eight hundred six thousand, two hundred one".