540523621171 has 4 divisors (see below), whose sum is σ = 540535674352. Its totient is φ = 540511567992.

The previous prime is 540523621151. The next prime is 540523621177. The reversal of 540523621171 is 171126325045.

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 540523621171 - 2¹⁵ = 540523588403 is a prime.

It is a super-2 number, since 2×540523621171² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 540523621171.

It is not an unprimeable number, because it can be changed into a prime (540523621177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5959071 + ... + 6049096.

It is an arithmetic number, because the mean of its divisors is an integer number (135133918588).

Almost surely, 2^540523621171 is an apocalyptic number.

540523621171 is a deficient number, since it is larger than the sum of its proper divisors (12053181).

540523621171 is a wasteful number, since it uses less digits than its factorization.

540523621171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12053180.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 540523621171 in words is "five hundred forty billion, five hundred twenty-three million, six hundred twenty-one thousand, one hundred seventy-one".