16540593791 has 2 divisors, whose sum is σ = 16540593792. Its totient is φ = 16540593790.

The previous prime is 16540593781. The next prime is 16540593847. The reversal of 16540593791 is 19739504561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16540593791 - 2¹⁰ = 16540592767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16540593761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8270296895 + 8270296896.

It is an arithmetic number, because the mean of its divisors is an integer number (8270296896).

Almost surely, 2^16540593791 is an apocalyptic number.

16540593791 is a deficient number, since it is larger than the sum of its proper divisors (1).

16540593791 is an equidigital number, since it uses as much as digits as its factorization.

16540593791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1020600, while the sum is 50.

The spelling of 16540593791 in words is "sixteen billion, five hundred forty million, five hundred ninety-three thousand, seven hundred ninety-one".