20267280863 has 4 divisors (see below), whose sum is σ = 20267565600. Its totient is φ = 20266996128.

The previous prime is 20267280811. The next prime is 20267280923. The reversal of 20267280863 is 36808276202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20267280863 - 2¹⁰ = 20267279839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20267280463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69431 + ... + 212967.

It is an arithmetic number, because the mean of its divisors is an integer number (5066891400).

Almost surely, 2^20267280863 is an apocalyptic number.

20267280863 is a deficient number, since it is larger than the sum of its proper divisors (284737).

20267280863 is a wasteful number, since it uses less digits than its factorization.

20267280863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284736.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 20267280863 in words is "twenty billion, two hundred sixty-seven million, two hundred eighty thousand, eight hundred sixty-three".