2136321999 has 16 divisors (see below), whose sum is σ = 3617053440. Its totient is φ = 1220755320.

The previous prime is 2136321959. The next prime is 2136322031. The reversal of 2136321999 is 9991236312.

2136321999 is a `hidden beast` number, since 2 + 1 + 3 + 632 + 1 + 9 + 9 + 9 = 666.

It is not a de Polignac number, because 2136321999 - 2¹⁵ = 2136289231 is a prime.

It is a super-2 number, since 2×2136321999² = 9127743366822712002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136321959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5651457 + ... + 5651834.

It is an arithmetic number, because the mean of its divisors is an integer number (226065840).

Almost surely, 2^2136321999 is an apocalyptic number.

2136321999 is a deficient number, since it is larger than the sum of its proper divisors (1480731441).

2136321999 is a wasteful number, since it uses less digits than its factorization.

2136321999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11303307 (or 11303301 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 2136321999 is about 46220.3634667665. The cubic root of 2136321999 is about 1287.9200500041.

The spelling of 2136321999 in words is "two billion, one hundred thirty-six million, three hundred twenty-one thousand, nine hundred ninety-nine".