16161604187 has 2 divisors, whose sum is σ = 16161604188. Its totient is φ = 16161604186.

The previous prime is 16161604169. The next prime is 16161604241. The reversal of 16161604187 is 78140616161.

16161604187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16161604187 - 2²⁰ = 16160555611 is a prime.

It is a super-2 number, since 2×16161604187² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16161604127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8080802093 + 8080802094.

It is an arithmetic number, because the mean of its divisors is an integer number (8080802094).

Almost surely, 2^16161604187 is an apocalyptic number.

16161604187 is a deficient number, since it is larger than the sum of its proper divisors (1).

16161604187 is an equidigital number, since it uses as much as digits as its factorization.

16161604187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 16161604187 in words is "sixteen billion, one hundred sixty-one million, six hundred four thousand, one hundred eighty-seven".