104450988890021 has 2 divisors, whose sum is σ = 104450988890022. Its totient is φ = 104450988890020.

The previous prime is 104450988890009. The next prime is 104450988890029. The reversal of 104450988890021 is 120098889054401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103380374452996 + 1070614437025 = 10167614^2 + 1034705^2 .

It is a cyclic number.

It is not a de Polignac number, because 104450988890021 - 2¹⁰ = 104450988888997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104450988890029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52225494445010 + 52225494445011.

It is an arithmetic number, because the mean of its divisors is an integer number (52225494445011).

Almost surely, 2^{104450988890021} is an apocalyptic number.

It is an amenable number.

104450988890021 is a deficient number, since it is larger than the sum of its proper divisors (1).

104450988890021 is an equidigital number, since it uses as much as digits as its factorization.

104450988890021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6635520, while the sum is 59.

The spelling of 104450988890021 in words is "one hundred four trillion, four hundred fifty billion, nine hundred eighty-eight million, eight hundred ninety thousand, twenty-one".