540506053721563 has 4 divisors (see below), whose sum is σ = 568953740759560. Its totient is φ = 512058366683568.

The previous prime is 540506053721551. The next prime is 540506053721591. The reversal of 540506053721563 is 365127350605045.

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 540506053721563 - 2⁵ = 540506053721531 is a prime.

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 540506053721563.

It is not an unprimeable number, because it can be changed into a prime (540506053725563) 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, 14223843518970 + ... + 14223843519007.

It is an arithmetic number, because the mean of its divisors is an integer number (142238435189890).

Almost surely, 2^{540506053721563} is an apocalyptic number.

540506053721563 is a deficient number, since it is larger than the sum of its proper divisors (28447687037997).

540506053721563 is a wasteful number, since it uses less digits than its factorization.

540506053721563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28447687037996.

The product of its (nonzero) digits is 11340000, while the sum is 52.

The spelling of 540506053721563 in words is "five hundred forty trillion, five hundred six billion, fifty-three million, seven hundred twenty-one thousand, five hundred sixty-three".