540364072173561 has 24 divisors (see below), whose sum is σ = 783066533319200. Its totient is φ = 359070244543296.

The previous prime is 540364072173547. The next prime is 540364072173599. The reversal of 540364072173561 is 165371270463045.

540364072173561 is a `hidden beast` number, since 5 + 4 + 0 + 3 + 6 + 4 + 0 + 7 + 2 + 1 + 73 + 561 = 666.

It is not a de Polignac number, because 540364072173561 - 2¹⁰ = 540364072172537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 540364072173498 and 540364072173507.

It is not an unprimeable number, because it can be changed into a prime (540364072373561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41297550 + ... + 52784616.

Almost surely, 2^{540364072173561} is an apocalyptic number.

It is an amenable number.

540364072173561 is a deficient number, since it is larger than the sum of its proper divisors (242702461145639).

540364072173561 is a wasteful number, since it uses less digits than its factorization.

540364072173561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11504085 (or 11504082 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 54.

The spelling of 540364072173561 in words is "five hundred forty trillion, three hundred sixty-four billion, seventy-two million, one hundred seventy-three thousand, five hundred sixty-one".