2113666971 has 16 divisors (see below), whose sum is σ = 3035929344. Its totient is φ = 1300323744.

The previous prime is 2113666937. The next prime is 2113666981. The reversal of 2113666971 is 1796663112.

It is not a de Polignac number, because 2113666971 - 2¹⁷ = 2113535899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2113666901) 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, 172180 + ... + 184046.

It is an arithmetic number, because the mean of its divisors is an integer number (189745584).

Almost surely, 2^2113666971 is an apocalyptic number.

2113666971 is a deficient number, since it is larger than the sum of its proper divisors (922262373).

2113666971 is a wasteful number, since it uses less digits than its factorization.

2113666971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16450.

The product of its digits is 81648, while the sum is 42.

The square root of 2113666971 is about 45974.6339952805. The cubic root of 2113666971 is about 1283.3511979448.

The spelling of 2113666971 in words is "two billion, one hundred thirteen million, six hundred sixty-six thousand, nine hundred seventy-one".