540165984691 has 2 divisors, whose sum is σ = 540165984692. Its totient is φ = 540165984690.

The previous prime is 540165984671. The next prime is 540165984737. The reversal of 540165984691 is 196489561045.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540165984691 is a prime.

It is not a weakly prime, because it can be changed into another prime (540165984671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270082992345 + 270082992346.

It is an arithmetic number, because the mean of its divisors is an integer number (270082992346).

Almost surely, 2^540165984691 is an apocalyptic number.

540165984691 is a deficient number, since it is larger than the sum of its proper divisors (1).

540165984691 is an equidigital number, since it uses as much as digits as its factorization.

540165984691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9331200, while the sum is 58.

The spelling of 540165984691 in words is "five hundred forty billion, one hundred sixty-five million, nine hundred eighty-four thousand, six hundred ninety-one".