20410542321266 has 16 divisors (see below), whose sum is σ = 30960131260320. Its totient is φ = 10090500937440.

The previous prime is 20410542321223. The next prime is 20410542321311. The reversal of 20410542321266 is 66212324501402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18387725 + ... + 19466111.

It is an arithmetic number, because the mean of its divisors is an integer number (1935008203770).

Almost surely, 2^{20410542321266} is an apocalyptic number.

20410542321266 is a deficient number, since it is larger than the sum of its proper divisors (10549588939054).

20410542321266 is a wasteful number, since it uses less digits than its factorization.

20410542321266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184809.

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 20410542321266 its reverse (66212324501402), we get a palindrome (86622866822668).

The spelling of 20410542321266 in words is "twenty trillion, four hundred ten billion, five hundred forty-two million, three hundred twenty-one thousand, two hundred sixty-six".