2116399068 has 36 divisors (see below), whose sum is σ = 6114042480. Its totient is φ = 604685376.

The previous prime is 2116399067. The next prime is 2116399111. The reversal of 2116399068 is 8609936112.

It is a happy number.

2116399068 is a `hidden beast` number, since 2 + 1 + 1 + 639 + 9 + 0 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116399067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4198953 + ... + 4199456.

Almost surely, 2^2116399068 is an apocalyptic number.

2116399068 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2116399068 is an abundant number, since it is smaller than the sum of its proper divisors (3997643412).

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

2116399068 is a wasteful number, since it uses less digits than its factorization.

2116399068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8398426 (or 8398421 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 2116399068 is about 46004.3374911540. The cubic root of 2116399068 is about 1283.9039072700.

The spelling of 2116399068 in words is "two billion, one hundred sixteen million, three hundred ninety-nine thousand, sixty-eight".