20540364253043 has 2 divisors, whose sum is σ = 20540364253044. Its totient is φ = 20540364253042.

The previous prime is 20540364253021. The next prime is 20540364253049. The reversal of 20540364253043 is 34035246304502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20540364253043 - 2¹⁶ = 20540364187507 is a prime.

It is not a weakly prime, because it can be changed into another prime (20540364253049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270182126521 + 10270182126522.

It is an arithmetic number, because the mean of its divisors is an integer number (10270182126522).

Almost surely, 2^{20540364253043} is an apocalyptic number.

20540364253043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20540364253043 is an equidigital number, since it uses as much as digits as its factorization.

20540364253043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1036800, while the sum is 41.

The spelling of 20540364253043 in words is "twenty trillion, five hundred forty billion, three hundred sixty-four million, two hundred fifty-three thousand, forty-three".