2012151615165 has 20 divisors (see below), whose sum is σ = 3606968081244. Its totient is φ = 1073147527872.

The previous prime is 2012151615161. The next prime is 2012151615167. The reversal of 2012151615165 is 5615161512102.

2012151615165 is a `hidden beast` number, since 2 + 0 + 1 + 21 + 5 + 1 + 615 + 16 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 321928007769 + 1690223607396 = 567387^2 + 1300086^2 .

It is not a de Polignac number, because 2012151615165 - 2² = 2012151615161 is a prime.

It is a super-2 number, since 2×2012151615165² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012151615161) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2484137392 + ... + 2484138201.

Almost surely, 2^{2012151615165} is an apocalyptic number.

It is an amenable number.

2012151615165 is a deficient number, since it is larger than the sum of its proper divisors (1594816466079).

2012151615165 is an equidigital number, since it uses as much as digits as its factorization.

2012151615165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4968275610 (or 4968275601 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 36.

The spelling of 2012151615165 in words is "two trillion, twelve billion, one hundred fifty-one million, six hundred fifteen thousand, one hundred sixty-five".