20202046465 has 4 divisors (see below), whose sum is σ = 24242455764. Its totient is φ = 16161637168.

The previous prime is 20202046433. The next prime is 20202046471. The reversal of 20202046465 is 56464020202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6415529409 + 13786517056 = 80097^2 + 117416^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202046465 - 2⁵ = 20202046433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020204642 + ... + 2020204651.

It is an arithmetic number, because the mean of its divisors is an integer number (6060613941).

Almost surely, 2^20202046465 is an apocalyptic number.

It is an amenable number.

20202046465 is a deficient number, since it is larger than the sum of its proper divisors (4040409299).

20202046465 is an equidigital number, since it uses as much as digits as its factorization.

20202046465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040409298.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 20202046465 its reverse (56464020202), we get a palindrome (76666066667).

The spelling of 20202046465 in words is "twenty billion, two hundred two million, forty-six thousand, four hundred sixty-five".