161735400327 has 4 divisors (see below), whose sum is σ = 215647200440. Its totient is φ = 107823600216.

The previous prime is 161735400313. The next prime is 161735400353. The reversal of 161735400327 is 723004537161.

161735400327 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 161735400327 - 2²² = 161731206023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161735400397) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 26955900052 + ... + 26955900057.

It is an arithmetic number, because the mean of its divisors is an integer number (53911800110).

Almost surely, 2^161735400327 is an apocalyptic number.

161735400327 is a deficient number, since it is larger than the sum of its proper divisors (53911800113).

161735400327 is an equidigital number, since it uses as much as digits as its factorization.

161735400327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53911800112.

The product of its (nonzero) digits is 105840, while the sum is 39.

Adding to 161735400327 its reverse (723004537161), we get a palindrome (884739937488).

The spelling of 161735400327 in words is "one hundred sixty-one billion, seven hundred thirty-five million, four hundred thousand, three hundred twenty-seven".