20869024887 has 24 divisors (see below), whose sum is σ = 30887656800. Its totient is φ = 13569707520.

The previous prime is 20869024873. The next prime is 20869024903. The reversal of 20869024887 is 78842096802.

It is not a de Polignac number, because 20869024887 - 2¹⁶ = 20868959351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20869024087) 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 23 ways as a sum of consecutive naturals, for example, 2422614 + ... + 2431212.

It is an arithmetic number, because the mean of its divisors is an integer number (1286985700).

Almost surely, 2^20869024887 is an apocalyptic number.

20869024887 is a deficient number, since it is larger than the sum of its proper divisors (10018631913).

20869024887 is a wasteful number, since it uses less digits than its factorization.

20869024887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15223 (or 15220 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 20869024887 in words is "twenty billion, eight hundred sixty-nine million, twenty-four thousand, eight hundred eighty-seven".