21044110314497 has 2 divisors, whose sum is σ = 21044110314498. Its totient is φ = 21044110314496.

The previous prime is 21044110314433. The next prime is 21044110314509. The reversal of 21044110314497 is 79441301144012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20954064708721 + 90045605776 = 4577561^2 + 300076^2 .

It is a cyclic number.

It is not a de Polignac number, because 21044110314497 - 2⁶ = 21044110314433 is a prime.

It is not a weakly prime, because it can be changed into another prime (21044110314797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10522055157248 + 10522055157249.

It is an arithmetic number, because the mean of its divisors is an integer number (10522055157249).

Almost surely, 2^{21044110314497} is an apocalyptic number.

It is an amenable number.

21044110314497 is a deficient number, since it is larger than the sum of its proper divisors (1).

21044110314497 is an equidigital number, since it uses as much as digits as its factorization.

21044110314497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 21044110314497 in words is "twenty-one trillion, forty-four billion, one hundred ten million, three hundred fourteen thousand, four hundred ninety-seven".