20527880287 has 8 divisors (see below), whose sum is σ = 21062558160. Its totient is φ = 19994821440.

The previous prime is 20527880221. The next prime is 20527880309. The reversal of 20527880287 is 78208872502.

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 20527880287 - 2⁷ = 20527880159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20527880287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20527880887) 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, 379048 + ... + 429805.

It is an arithmetic number, because the mean of its divisors is an integer number (2632819770).

Almost surely, 2^20527880287 is an apocalyptic number.

20527880287 is a deficient number, since it is larger than the sum of its proper divisors (534677873).

20527880287 is an equidigital number, since it uses as much as digits as its factorization.

20527880287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809513.

The product of its (nonzero) digits is 1003520, while the sum is 49.

The spelling of 20527880287 in words is "twenty billion, five hundred twenty-seven million, eight hundred eighty thousand, two hundred eighty-seven".