2116661313 has 32 divisors (see below), whose sum is σ = 3387484800. Its totient is φ = 1161409536.

The previous prime is 2116661303. The next prime is 2116661317. The reversal of 2116661313 is 3131666112.

It is not a de Polignac number, because 2116661313 - 2⁴ = 2116661297 is a prime.

It is a super-2 number, since 2×2116661313² = 8960510227901767938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2116661317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71418 + ... + 96611.

It is an arithmetic number, because the mean of its divisors is an integer number (105858900).

Almost surely, 2^2116661313 is an apocalyptic number.

It is an amenable number.

2116661313 is a deficient number, since it is larger than the sum of its proper divisors (1270823487).

2116661313 is a wasteful number, since it uses less digits than its factorization.

2116661313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168081.

The product of its digits is 3888, while the sum is 30.

The square root of 2116661313 is about 46007.1876232399. The cubic root of 2116661313 is about 1283.9569349936.

The spelling of 2116661313 in words is "two billion, one hundred sixteen million, six hundred sixty-one thousand, three hundred thirteen".