2661017513 has 16 divisors (see below), whose sum is σ = 3318835200. Its totient is φ = 2072768400.

The previous prime is 2661017483. The next prime is 2661017551. The reversal of 2661017513 is 3157101662.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2661017513 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 2661017513.

It is not an unprimeable number, because it can be changed into a prime (2661047513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311408 + ... + 319838.

It is an arithmetic number, because the mean of its divisors is an integer number (207427200).

Almost surely, 2^2661017513 is an apocalyptic number.

It is an amenable number.

2661017513 is a deficient number, since it is larger than the sum of its proper divisors (657817687).

2661017513 is a wasteful number, since it uses less digits than its factorization.

2661017513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12548.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 2661017513 is about 51585.0512551844. The cubic root of 2661017513 is about 1385.7426303151.

The spelling of 2661017513 in words is "two billion, six hundred sixty-one million, seventeen thousand, five hundred thirteen".