161075514601 has 4 divisors (see below), whose sum is σ = 161086162500. Its totient is φ = 161064866704.

The previous prime is 161075514577. The next prime is 161075514637. The reversal of 161075514601 is 106415570161.

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

It can be written as a sum of positive squares in 2 ways, for example, as 63965997225 + 97109517376 = 252915^2 + 311624^2 .

It is a cyclic number.

It is not a de Polignac number, because 161075514601 - 2⁵ = 161075514569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161075514401) 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, 5301226 + ... + 5331523.

It is an arithmetic number, because the mean of its divisors is an integer number (40271540625).

Almost surely, 2^161075514601 is an apocalyptic number.

It is an amenable number.

161075514601 is a deficient number, since it is larger than the sum of its proper divisors (10647899).

161075514601 is a wasteful number, since it uses less digits than its factorization.

161075514601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10647898.

The product of its (nonzero) digits is 25200, while the sum is 37.

The spelling of 161075514601 in words is "one hundred sixty-one billion, seventy-five million, five hundred fourteen thousand, six hundred one".