20540740327 has 2 divisors, whose sum is σ = 20540740328. Its totient is φ = 20540740326.

The previous prime is 20540740321. The next prime is 20540740379. The reversal of 20540740327 is 72304704502.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20540740327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20540740292 and 20540740301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20540740321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270370163 + 10270370164.

It is an arithmetic number, because the mean of its divisors is an integer number (10270370164).

Almost surely, 2^20540740327 is an apocalyptic number.

20540740327 is a deficient number, since it is larger than the sum of its proper divisors (1).

20540740327 is an equidigital number, since it uses as much as digits as its factorization.

20540740327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 34.

The spelling of 20540740327 in words is "twenty billion, five hundred forty million, seven hundred forty thousand, three hundred twenty-seven".