161201015 has 8 divisors (see below), whose sum is σ = 193642368. Its totient is φ = 128826720.

The previous prime is 161200999. The next prime is 161201041. The reversal of 161201015 is 510102161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161201015 - 2⁴ = 161200999 is a prime.

It is a Duffinian number.

It is a zygodrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 161200984 and 161201002.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 11312 + ... + 21221.

It is an arithmetic number, because the mean of its divisors is an integer number (24205296).

Almost surely, 2^161201015 is an apocalyptic number.

161201015 is a deficient number, since it is larger than the sum of its proper divisors (32441353).

161201015 is an equidigital number, since it uses as much as digits as its factorization.

161201015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33529.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 161201015 is about 12696.4961702038. The cubic root of 161201015 is about 544.2384954384.

Adding to 161201015 its reverse (510102161), we get a palindrome (671303176).

The spelling of 161201015 in words is "one hundred sixty-one million, two hundred one thousand, fifteen".