2136621366 has 48 divisors (see below), whose sum is σ = 5055006528. Its totient is φ = 646844400.

The previous prime is 2136621349. The next prime is 2136621373. The reversal of 2136621366 is 6631266312.

2136621366 is a `hidden beast` number, since 21 + 3 + 6 + 621 + 3 + 6 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2136621366.

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 23 ways as a sum of consecutive naturals, for example, 230481 + ... + 239571.

It is an arithmetic number, because the mean of its divisors is an integer number (105312636).

Almost surely, 2^2136621366 is an apocalyptic number.

2136621366 is an abundant number, since it is smaller than the sum of its proper divisors (2918385162).

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

2136621366 is a wasteful number, since it uses less digits than its factorization.

2136621366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10297 (or 10294 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 2136621366 is about 46223.6018285032. The cubic root of 2136621366 is about 1287.9802067834.

Adding to 2136621366 its reverse (6631266312), we get a palindrome (8767887678).

The spelling of 2136621366 in words is "two billion, one hundred thirty-six million, six hundred twenty-one thousand, three hundred sixty-six".