161403034504 has 8 divisors (see below), whose sum is σ = 302630689710. Its totient is φ = 80701517248.

The previous prime is 161403034489. The next prime is 161403034519. The reversal of 161403034504 is 405430304161.

It is a happy number.

161403034504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161403034489) and next prime (161403034519).

It can be written as a sum of positive squares in only one way, i.e., 117971640900 + 43431393604 = 343470^2 + 208402^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10087689649 + ... + 10087689664.

Almost surely, 2^161403034504 is an apocalyptic number.

It is an amenable number.

161403034504 is a deficient number, since it is larger than the sum of its proper divisors (141227655206).

161403034504 is a wasteful number, since it uses less digits than its factorization.

161403034504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20175379319 (or 20175379315 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 161403034504 its reverse (405430304161), we get a palindrome (566833338665).

The spelling of 161403034504 in words is "one hundred sixty-one billion, four hundred three million, thirty-four thousand, five hundred four".