2015712161 has 8 divisors (see below), whose sum is σ = 2063201184. Its totient is φ = 1968251040.

The previous prime is 2015712143. The next prime is 2015712169. The reversal of 2015712161 is 1612175102.

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

It is not a de Polignac number, because 2015712161 - 2¹⁴ = 2015695777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2015712161.

It is not an unprimeable number, because it can be changed into a prime (2015712169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242606 + ... + 250776.

It is an arithmetic number, because the mean of its divisors is an integer number (257900148).

Almost surely, 2^2015712161 is an apocalyptic number.

It is an amenable number.

2015712161 is a deficient number, since it is larger than the sum of its proper divisors (47489023).

2015712161 is an equidigital number, since it uses as much as digits as its factorization.

2015712161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13951.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 2015712161 is about 44896.6831848412. The cubic root of 2015712161 is about 1263.2117944928.

Adding to 2015712161 its reverse (1612175102), we get a palindrome (3627887263).

The spelling of 2015712161 in words is "two billion, fifteen million, seven hundred twelve thousand, one hundred sixty-one".