20463355456 has 28 divisors (see below), whose sum is σ = 40694733952. Its totient is φ = 10209564288.

The previous prime is 20463355453. The next prime is 20463355459. The reversal of 20463355456 is 65455336402.

It is an interprime number because it is at equal distance from previous prime (20463355453) and next prime (20463355459).

It is not an unprimeable number, because it can be changed into a prime (20463355453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315660 + ... + 374923.

Almost surely, 2^20463355456 is an apocalyptic number.

It is an amenable number.

20463355456 is a deficient number, since it is larger than the sum of its proper divisors (20231378496).

20463355456 is an equidigital number, since it uses as much as digits as its factorization.

20463355456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691058 (or 691048 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 43.

The spelling of 20463355456 in words is "twenty billion, four hundred sixty-three million, three hundred fifty-five thousand, four hundred fifty-six".