20453585968 has 40 divisors (see below), whose sum is σ = 40371071840. Its totient is φ = 10036016640.

The previous prime is 20453585959. The next prime is 20453585969. The reversal of 20453585968 is 86958535402.

It is not an unprimeable number, because it can be changed into a prime (20453585969) 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 7 ways as a sum of consecutive naturals, for example, 404596 + ... + 452332.

It is an arithmetic number, because the mean of its divisors is an integer number (1009276796).

Almost surely, 2^20453585968 is an apocalyptic number.

It is an amenable number.

20453585968 is a deficient number, since it is larger than the sum of its proper divisors (19917485872).

20453585968 is a wasteful number, since it uses less digits than its factorization.

20453585968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48245 (or 48239 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 55.

The spelling of 20453585968 in words is "twenty billion, four hundred fifty-three million, five hundred eighty-five thousand, nine hundred sixty-eight".