20432305487 has 8 divisors (see below), whose sum is σ = 22362396672. Its totient is φ = 18514315800.

The previous prime is 20432305477. The next prime is 20432305493. The reversal of 20432305487 is 78450323402.

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 20432305487 - 2¹⁰ = 20432304463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20432305487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432305477) 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, 3021839 + ... + 3028592.

It is an arithmetic number, because the mean of its divisors is an integer number (2795299584).

Almost surely, 2^20432305487 is an apocalyptic number.

20432305487 is a deficient number, since it is larger than the sum of its proper divisors (1930091185).

20432305487 is a wasteful number, since it uses less digits than its factorization.

20432305487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6050749.

The product of its (nonzero) digits is 161280, while the sum is 38.

Adding to 20432305487 its reverse (78450323402), we get a palindrome (98882628889).

The spelling of 20432305487 in words is "twenty billion, four hundred thirty-two million, three hundred five thousand, four hundred eighty-seven".