20487814869 has 8 divisors (see below), whose sum is σ = 27646208352. Its totient is φ = 13493982320.

The previous prime is 20487814859. The next prime is 20487814871. The reversal of 20487814869 is 96841878402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20487814869 - 2¹⁹ = 20487290581 is a prime.

It is a super-3 number, since 3×20487814869³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20487814819) 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 7 ways as a sum of consecutive naturals, for example, 41139942 + ... + 41140439.

It is an arithmetic number, because the mean of its divisors is an integer number (3455776044).

Almost surely, 2^20487814869 is an apocalyptic number.

It is an amenable number.

20487814869 is a deficient number, since it is larger than the sum of its proper divisors (7158393483).

20487814869 is an equidigital number, since it uses as much as digits as its factorization.

20487814869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82280467.

The product of its (nonzero) digits is 6193152, while the sum is 57.

The spelling of 20487814869 in words is "twenty billion, four hundred eighty-seven million, eight hundred fourteen thousand, eight hundred sixty-nine".