16472170181 has 2 divisors, whose sum is σ = 16472170182. Its totient is φ = 16472170180.

The previous prime is 16472170159. The next prime is 16472170189. The reversal of 16472170181 is 18107127461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15960279556 + 511890625 = 126334^2 + 22625^2 .

It is a cyclic number.

It is not a de Polignac number, because 16472170181 - 2²² = 16467975877 is a prime.

It is a super-2 number, since 2×16472170181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16472170189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8236085090 + 8236085091.

It is an arithmetic number, because the mean of its divisors is an integer number (8236085091).

Almost surely, 2^16472170181 is an apocalyptic number.

It is an amenable number.

16472170181 is a deficient number, since it is larger than the sum of its proper divisors (1).

16472170181 is an equidigital number, since it uses as much as digits as its factorization.

16472170181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 38.

The spelling of 16472170181 in words is "sixteen billion, four hundred seventy-two million, one hundred seventy thousand, one hundred eighty-one".