2136654621 has 12 divisors (see below), whose sum is σ = 3220465248. Its totient is φ = 1362504264.

The previous prime is 2136654551. The next prime is 2136654643. The reversal of 2136654621 is 1264566312.

2136654621 is a `hidden beast` number, since 2 + 136 + 65 + 462 + 1 = 666.

It is not a de Polignac number, because 2136654621 - 2⁹ = 2136654109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136653621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5160795 + ... + 5161208.

It is an arithmetic number, because the mean of its divisors is an integer number (268372104).

Almost surely, 2^2136654621 is an apocalyptic number.

It is an amenable number.

2136654621 is a deficient number, since it is larger than the sum of its proper divisors (1083810627).

2136654621 is a wasteful number, since it uses less digits than its factorization.

2136654621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10322032 (or 10322029 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 2136654621 is about 46223.9615459342. The cubic root of 2136654621 is about 1287.9868889156.

The spelling of 2136654621 in words is "two billion, one hundred thirty-six million, six hundred fifty-four thousand, six hundred twenty-one".