20304665465 has 16 divisors (see below), whose sum is σ = 28092832128. Its totient is φ = 13799982336.

The previous prime is 20304665461. The next prime is 20304665467. The reversal of 20304665465 is 56456640302.

It is a happy number.

It is not a de Polignac number, because 20304665465 - 2² = 20304665461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20304665461) 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 15 ways as a sum of consecutive naturals, for example, 2563007 + ... + 2570916.

It is an arithmetic number, because the mean of its divisors is an integer number (1755802008).

Almost surely, 2^20304665465 is an apocalyptic number.

It is an amenable number.

20304665465 is a deficient number, since it is larger than the sum of its proper divisors (7788166663).

20304665465 is a wasteful number, since it uses less digits than its factorization.

20304665465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5134048.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 20304665465 in words is "twenty billion, three hundred four million, six hundred sixty-five thousand, four hundred sixty-five".