20464286009 has 4 divisors (see below), whose sum is σ = 20500635216. Its totient is φ = 20427936804.

The previous prime is 20464285979. The next prime is 20464286033. The reversal of 20464286009 is 90068246402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20464286009 - 2¹⁶ = 20464220473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20464283009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18173759 + ... + 18174884.

It is an arithmetic number, because the mean of its divisors is an integer number (5125158804).

Almost surely, 2^20464286009 is an apocalyptic number.

It is an amenable number.

20464286009 is a deficient number, since it is larger than the sum of its proper divisors (36349207).

20464286009 is an equidigital number, since it uses as much as digits as its factorization.

20464286009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36349206.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 20464286009 in words is "twenty billion, four hundred sixty-four million, two hundred eighty-six thousand, nine".