540255661843 has 4 divisors (see below), whose sum is σ = 547656424408. Its totient is φ = 532854899280.

The previous prime is 540255661817. The next prime is 540255661877. The reversal of 540255661843 is 348166552045.

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 540255661843 - 2⁵ = 540255661811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540255661643) 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, 3700381173 + ... + 3700381318.

It is an arithmetic number, because the mean of its divisors is an integer number (136914106102).

Almost surely, 2^540255661843 is an apocalyptic number.

540255661843 is a deficient number, since it is larger than the sum of its proper divisors (7400762565).

540255661843 is an equidigital number, since it uses as much as digits as its factorization.

540255661843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7400762564.

The product of its (nonzero) digits is 3456000, while the sum is 49.

The spelling of 540255661843 in words is "five hundred forty billion, two hundred fifty-five million, six hundred sixty-one thousand, eight hundred forty-three".