20540754097 has 2 divisors, whose sum is σ = 20540754098. Its totient is φ = 20540754096.

The previous prime is 20540754077. The next prime is 20540754149. The reversal of 20540754097 is 79045704502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19844638641 + 696115456 = 140871^2 + 26384^2 .

It is a cyclic number.

It is not a de Polignac number, because 20540754097 - 2¹¹ = 20540752049 is a prime.

It is not a weakly prime, because it can be changed into another prime (20540754077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270377048 + 10270377049.

It is an arithmetic number, because the mean of its divisors is an integer number (10270377049).

Almost surely, 2^20540754097 is an apocalyptic number.

It is an amenable number.

20540754097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20540754097 is an equidigital number, since it uses as much as digits as its factorization.

20540754097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 20540754097 in words is "twenty billion, five hundred forty million, seven hundred fifty-four thousand, ninety-seven".