161401330115 has 32 divisors (see below), whose sum is σ = 201883968000. Its totient is φ = 123786625536.

The previous prime is 161401330073. The next prime is 161401330117. The reversal of 161401330115 is 511033104161.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 161401330115 - 2¹⁰ = 161401329091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161401330117) 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 31 ways as a sum of consecutive naturals, for example, 2470136 + ... + 2534634.

It is an arithmetic number, because the mean of its divisors is an integer number (6308874000).

Almost surely, 2^161401330115 is an apocalyptic number.

161401330115 is a deficient number, since it is larger than the sum of its proper divisors (40482637885).

161401330115 is a wasteful number, since it uses less digits than its factorization.

161401330115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64763.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 161401330115 its reverse (511033104161), we get a palindrome (672434434276).

The spelling of 161401330115 in words is "one hundred sixty-one billion, four hundred one million, three hundred thirty thousand, one hundred fifteen".