20908185091632 has 100 divisors (see below), whose sum is σ = 60546669424120. Its totient is φ = 6965673242112.

The previous prime is 20908185091627. The next prime is 20908185091639. The reversal of 20908185091632 is 23619058180902.

20908185091632 is a `hidden beast` number, since 2 + 0 + 90 + 8 + 1 + 8 + 509 + 16 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (20908185091639) 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 19 ways as a sum of consecutive naturals, for example, 1879282 + ... + 6734097.

Almost surely, 2^{20908185091632} is an apocalyptic number.

It is an amenable number.

20908185091632 is an abundant number, since it is smaller than the sum of its proper divisors (39638484332488).

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

20908185091632 is a wasteful number, since it uses less digits than its factorization.

20908185091632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8615272 (or 8615257 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 20908185091632 in words is "twenty trillion, nine hundred eight billion, one hundred eighty-five million, ninety-one thousand, six hundred thirty-two".