16481673161 has 2 divisors, whose sum is σ = 16481673162. Its totient is φ = 16481673160.

The previous prime is 16481673137. The next prime is 16481673167. The reversal of 16481673161 is 16137618461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8727109561 + 7754563600 = 93419^2 + 88060^2 .

It is a cyclic number.

It is not a de Polignac number, because 16481673161 - 2¹⁴ = 16481656777 is a prime.

It is not a weakly prime, because it can be changed into another prime (16481673167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8240836580 + 8240836581.

It is an arithmetic number, because the mean of its divisors is an integer number (8240836581).

Almost surely, 2^16481673161 is an apocalyptic number.

It is an amenable number.

16481673161 is a deficient number, since it is larger than the sum of its proper divisors (1).

16481673161 is an equidigital number, since it uses as much as digits as its factorization.

16481673161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The spelling of 16481673161 in words is "sixteen billion, four hundred eighty-one million, six hundred seventy-three thousand, one hundred sixty-one".