161115375703 has 4 divisors (see below), whose sum is σ = 161129997720. Its totient is φ = 161100753688.

The previous prime is 161115375691. The next prime is 161115375713. The reversal of 161115375703 is 307573511161.

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

It is a cyclic number.

It is not a de Polignac number, because 161115375703 - 2²¹ = 161113278551 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 (161115375713) 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 in 3 ways as a sum of consecutive naturals, for example, 7294468 + ... + 7316521.

It is an arithmetic number, because the mean of its divisors is an integer number (40282499430).

Almost surely, 2^161115375703 is an apocalyptic number.

161115375703 is a deficient number, since it is larger than the sum of its proper divisors (14622017).

161115375703 is a wasteful number, since it uses less digits than its factorization.

161115375703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14622016.

The product of its (nonzero) digits is 66150, while the sum is 40.

Adding to 161115375703 its reverse (307573511161), we get a palindrome (468688886864).

The spelling of 161115375703 in words is "one hundred sixty-one billion, one hundred fifteen million, three hundred seventy-five thousand, seven hundred three".