540221234633161 has 8 divisors (see below), whose sum is σ = 544201054622280. Its totient is φ = 536241945068928.

The previous prime is 540221234633137. The next prime is 540221234633233. The reversal of 540221234633161 is 161336432122045.

It can be written as a sum of positive squares in 4 ways, for example, as 17887457536 + 540203347175625 = 133744^2 + 23242275^2 .

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 540221234633161 - 2⁹ = 540221234632649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540221234639161) 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, 130561666 + ... + 134635771.

It is an arithmetic number, because the mean of its divisors is an integer number (68025131827785).

Almost surely, 2^{540221234633161} is an apocalyptic number.

It is an amenable number.

540221234633161 is a deficient number, since it is larger than the sum of its proper divisors (3979819989119).

540221234633161 is a wasteful number, since it uses less digits than its factorization.

540221234633161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265212443.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 540221234633161 in words is "five hundred forty trillion, two hundred twenty-one billion, two hundred thirty-four million, six hundred thirty-three thousand, one hundred sixty-one".