2123364636 has 36 divisors (see below), whose sum is σ = 5368791792. Its totient is φ = 707603904.

The previous prime is 2123364631. The next prime is 2123364641. The reversal of 2123364636 is 6364633212.

2123364636 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 3 + 646 + 3 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (2123364631) and next prime (2123364641).

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

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a self number, because there is not a number n which added to its sum of digits gives 2123364636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123364631) 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, 272385 + ... + 280071.

Almost surely, 2^2123364636 is an apocalyptic number.

It is an amenable number.

2123364636 is an abundant number, since it is smaller than the sum of its proper divisors (3245427156).

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

2123364636 is a wasteful number, since it uses less digits than its factorization.

2123364636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15370 (or 15365 counting only the distinct ones).

The product of its digits is 93312, while the sum is 36.

The square root of 2123364636 is about 46079.9808593710. The cubic root of 2123364636 is about 1285.3109082309.

Adding to 2123364636 its reverse (6364633212), we get a palindrome (8487997848).

The spelling of 2123364636 in words is "two billion, one hundred twenty-three million, three hundred sixty-four thousand, six hundred thirty-six".