16443465550261 has 2 divisors, whose sum is σ = 16443465550262. Its totient is φ = 16443465550260.

The previous prime is 16443465550201. The next prime is 16443465550273. The reversal of 16443465550261 is 16205556434461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14620949350225 + 1822516200036 = 3823735^2 + 1350006^2 .

It is an emirp because it is prime and its reverse (16205556434461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16443465550261 - 2¹³ = 16443465542069 is a prime.

It is a super-3 number, since 3×16443465550261³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16443465550199 and 16443465550208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16443465550201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8221732775130 + 8221732775131.

It is an arithmetic number, because the mean of its divisors is an integer number (8221732775131).

Almost surely, 2^{16443465550261} is an apocalyptic number.

It is an amenable number.

16443465550261 is a deficient number, since it is larger than the sum of its proper divisors (1).

16443465550261 is an equidigital number, since it uses as much as digits as its factorization.

16443465550261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368000, while the sum is 52.

The spelling of 16443465550261 in words is "sixteen trillion, four hundred forty-three billion, four hundred sixty-five million, five hundred fifty thousand, two hundred sixty-one".