2011166515 has 8 divisors (see below), whose sum is σ = 2414277648. Its totient is φ = 1608348000.

The previous prime is 2011166497. The next prime is 2011166527. The reversal of 2011166515 is 5156611102.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-2011166515 is a prime.

It is a super-3 number, since 3×2011166515³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57736 + ... + 85765.

It is an arithmetic number, because the mean of its divisors is an integer number (301784706).

Almost surely, 2^2011166515 is an apocalyptic number.

2011166515 is a deficient number, since it is larger than the sum of its proper divisors (403111133).

2011166515 is a wasteful number, since it uses less digits than its factorization.

2011166515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146309.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 2011166515 is about 44846.0312067857. The cubic root of 2011166515 is about 1262.2615206843.

Adding to 2011166515 its reverse (5156611102), we get a palindrome (7167777617).

The spelling of 2011166515 in words is "two billion, eleven million, one hundred sixty-six thousand, five hundred fifteen".