540263304191 has 4 divisors (see below), whose sum is σ = 581822019912. Its totient is φ = 498704588472.

The previous prime is 540263304173. The next prime is 540263304199. The reversal of 540263304191 is 191403362045.

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 540263304191 - 2⁶ = 540263304127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540263304199) 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, 20779357841 + ... + 20779357866.

It is an arithmetic number, because the mean of its divisors is an integer number (145455504978).

Almost surely, 2^540263304191 is an apocalyptic number.

540263304191 is a deficient number, since it is larger than the sum of its proper divisors (41558715721).

540263304191 is a wasteful number, since it uses less digits than its factorization.

540263304191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41558715720.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 540263304191 in words is "five hundred forty billion, two hundred sixty-three million, three hundred four thousand, one hundred ninety-one".