10000171681849 has 2 divisors, whose sum is σ = 10000171681850. Its totient is φ = 10000171681848.

The previous prime is 10000171681793. The next prime is 10000171681883. The reversal of 10000171681849 is 94818617100001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7850335404025 + 2149836277824 = 2801845^2 + 1466232^2 .

It is a cyclic number.

It is not a de Polignac number, because 10000171681849 - 2¹⁵ = 10000171649081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10000171681799 and 10000171681808.

It is not a weakly prime, because it can be changed into another prime (10000171781849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000085840924 + 5000085840925.

It is an arithmetic number, because the mean of its divisors is an integer number (5000085840925).

Almost surely, 2^{10000171681849} is an apocalyptic number.

It is an amenable number.

10000171681849 is a deficient number, since it is larger than the sum of its proper divisors (1).

10000171681849 is an equidigital number, since it uses as much as digits as its factorization.

10000171681849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 46.

The spelling of 10000171681849 in words is "ten trillion, one hundred seventy-one million, six hundred eighty-one thousand, eight hundred forty-nine".