104453221681 has 2 divisors, whose sum is σ = 104453221682. Its totient is φ = 104453221680.

The previous prime is 104453221667. The next prime is 104453221721. The reversal of 104453221681 is 186122354401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100996840000 + 3456381681 = 317800^2 + 58791^2 .

It is a cyclic number.

It is not a de Polignac number, because 104453221681 - 2³¹ = 102305738033 is a prime.

It is a super-2 number, since 2×104453221681² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 104453221681.

It is not a weakly prime, because it can be changed into another prime (104453291681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52226610840 + 52226610841.

It is an arithmetic number, because the mean of its divisors is an integer number (52226610841).

Almost surely, 2^104453221681 is an apocalyptic number.

It is an amenable number.

104453221681 is a deficient number, since it is larger than the sum of its proper divisors (1).

104453221681 is an equidigital number, since it uses as much as digits as its factorization.

104453221681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 104453221681 in words is "one hundred four billion, four hundred fifty-three million, two hundred twenty-one thousand, six hundred eighty-one".