2116138662 has 64 divisors (see below), whose sum is σ = 5144325120. Its totient is φ = 639468000.

The previous prime is 2116138649. The next prime is 2116138693. The reversal of 2116138662 is 2668316112.

It is a happy number.

2116138662 is a `hidden beast` number, since 211 + 6 + 1 + 386 + 62 = 666.

It is a super-2 number, since 2×2116138662² = 8956085673622300488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216787 + ... + 226337.

It is an arithmetic number, because the mean of its divisors is an integer number (80380080).

Almost surely, 2^2116138662 is an apocalyptic number.

2116138662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2116138662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2572162560).

2116138662 is an abundant number, since it is smaller than the sum of its proper divisors (3028186458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2116138662 is a wasteful number, since it uses less digits than its factorization.

2116138662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9946 (or 9940 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 2116138662 is about 46001.5071709613. The cubic root of 2116138662 is about 1283.8512470700.

The spelling of 2116138662 in words is "two billion, one hundred sixteen million, one hundred thirty-eight thousand, six hundred sixty-two".