20480864247 has 12 divisors (see below), whose sum is σ = 30025015800. Its totient is φ = 13450119408.

The previous prime is 20480864221. The next prime is 20480864263. The reversal of 20480864247 is 74246808402.

It is not a de Polignac number, because 20480864247 - 2¹⁵ = 20480831479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20480814247) 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 11 ways as a sum of consecutive naturals, for example, 16981872 + ... + 16983077.

It is an arithmetic number, because the mean of its divisors is an integer number (2502084650).

Almost surely, 2^20480864247 is an apocalyptic number.

20480864247 is a deficient number, since it is larger than the sum of its proper divisors (9544151553).

20480864247 is a wasteful number, since it uses less digits than its factorization.

20480864247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33965022 (or 33965019 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 45.

The spelling of 20480864247 in words is "twenty billion, four hundred eighty million, eight hundred sixty-four thousand, two hundred forty-seven".