20587677244 has 6 divisors (see below), whose sum is σ = 36028435184. Its totient is φ = 10293838620.

The previous prime is 20587677239. The next prime is 20587677247. The reversal of 20587677244 is 44277678502.

It is a junction number, because it is equal to n+sod(n) for n = 20587677191 and 20587677200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20587677247) by changing a digit.

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 as a sum of consecutive naturals, namely, 2573459652 + ... + 2573459659.

Almost surely, 2^20587677244 is an apocalyptic number.

It is an amenable number.

20587677244 is a deficient number, since it is larger than the sum of its proper divisors (15440757940).

20587677244 is a wasteful number, since it uses less digits than its factorization.

20587677244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5146919315 (or 5146919313 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 52.

The spelling of 20587677244 in words is "twenty billion, five hundred eighty-seven million, six hundred seventy-seven thousand, two hundred forty-four".