16609167484738 has 4 divisors (see below), whose sum is σ = 24913751227110. Its totient is φ = 8304583742368.

The previous prime is 16609167484643. The next prime is 16609167484739. The reversal of 16609167484738 is 83748476190661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14083080024049 + 2526087460689 = 3752743^2 + 1589367^2 .

It is not an unprimeable number, because it can be changed into a prime (16609167484739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4152291871183 + ... + 4152291871186.

Almost surely, 2^{16609167484738} is an apocalyptic number.

16609167484738 is a deficient number, since it is larger than the sum of its proper divisors (8304583742372).

16609167484738 is an equidigital number, since it uses as much as digits as its factorization.

16609167484738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8304583742371.

The product of its (nonzero) digits is 292626432, while the sum is 70.

The spelling of 16609167484738 in words is "sixteen trillion, six hundred nine billion, one hundred sixty-seven million, four hundred eighty-four thousand, seven hundred thirty-eight".