540043152561 has 64 divisors (see below), whose sum is σ = 920069913600. Its totient is φ = 309621657600.

The previous prime is 540043152547. The next prime is 540043152589. The reversal of 540043152561 is 165251340045.

540043152561 is a `hidden beast` number, since 5 + 4 + 0 + 0 + 43 + 1 + 52 + 561 = 666.

It is not a de Polignac number, because 540043152561 - 2¹⁸ = 540042890417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (540043102561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3830065 + ... + 3968561.

It is an arithmetic number, because the mean of its divisors is an integer number (14376092400).

Almost surely, 2^540043152561 is an apocalyptic number.

It is an amenable number.

540043152561 is a deficient number, since it is larger than the sum of its proper divisors (380026761039).

540043152561 is a wasteful number, since it uses less digits than its factorization.

540043152561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139227 (or 139221 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 540043152561 in words is "five hundred forty billion, forty-three million, one hundred fifty-two thousand, five hundred sixty-one".