2168686716 has 96 divisors (see below), whose sum is σ = 6006669312. Its totient is φ = 595926720.

The previous prime is 2168686679. The next prime is 2168686769. The reversal of 2168686716 is 6176868612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 432375 + ... + 437361.

It is an arithmetic number, because the mean of its divisors is an integer number (62569472).

Almost surely, 2^2168686716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2168686716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3003334656).

2168686716 is an abundant number, since it is smaller than the sum of its proper divisors (3837982596).

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

2168686716 is a wasteful number, since it uses less digits than its factorization.

2168686716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5199 (or 5197 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 2168686716 is about 46569.1605679123. The cubic root of 2168686716 is about 1294.3913630925.

The spelling of 2168686716 in words is "two billion, one hundred sixty-eight million, six hundred eighty-six thousand, seven hundred sixteen".