21160466043173 has 2 divisors, whose sum is σ = 21160466043174. Its totient is φ = 21160466043172.

The previous prime is 21160466043149. The next prime is 21160466043187. The reversal of 21160466043173 is 37134066406112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20376493925089 + 783972118084 = 4514033^2 + 885422^2 .

It is a cyclic number.

It is not a de Polignac number, because 21160466043173 - 2⁸ = 21160466042917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21160466343173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10580233021586 + 10580233021587.

It is an arithmetic number, because the mean of its divisors is an integer number (10580233021587).

Almost surely, 2^{21160466043173} is an apocalyptic number.

It is an amenable number.

21160466043173 is a deficient number, since it is larger than the sum of its proper divisors (1).

21160466043173 is an equidigital number, since it uses as much as digits as its factorization.

21160466043173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 21160466043173 in words is "twenty-one trillion, one hundred sixty billion, four hundred sixty-six million, forty-three thousand, one hundred seventy-three".