20540364253127 has 2 divisors, whose sum is σ = 20540364253128. Its totient is φ = 20540364253126.

The previous prime is 20540364253117. The next prime is 20540364253133. The reversal of 20540364253127 is 72135246304502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20540364253127 is a prime.

It is a super-2 number, since 2×20540364253127² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20540364253117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270182126563 + 10270182126564.

It is an arithmetic number, because the mean of its divisors is an integer number (10270182126564).

Almost surely, 2^{20540364253127} is an apocalyptic number.

20540364253127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20540364253127 is an equidigital number, since it uses as much as digits as its factorization.

20540364253127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 44.

The spelling of 20540364253127 in words is "twenty trillion, five hundred forty billion, three hundred sixty-four million, two hundred fifty-three thousand, one hundred twenty-seven".