20005366671837 has 24 divisors (see below), whose sum is σ = 29073453968000. Its totient is φ = 13255450879968.

The previous prime is 20005366671793. The next prime is 20005366671911. The reversal of 20005366671837 is 73817666350002.

It is not a de Polignac number, because 20005366671837 - 2¹⁴ = 20005366655453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20005366671337) 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 23 ways as a sum of consecutive naturals, for example, 4431298 + ... + 7723155.

Almost surely, 2^{20005366671837} is an apocalyptic number.

It is an amenable number.

20005366671837 is a deficient number, since it is larger than the sum of its proper divisors (9068087296163).

20005366671837 is a wasteful number, since it uses less digits than its factorization.

20005366671837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12155577 (or 12155574 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 20005366671837 in words is "twenty trillion, five billion, three hundred sixty-six million, six hundred seventy-one thousand, eight hundred thirty-seven".