20313258656 has 48 divisors (see below), whose sum is σ = 42361704000. Its totient is φ = 9555225600.

The previous prime is 20313258613. The next prime is 20313258659. The reversal of 20313258656 is 65685231302.

It is not an unprimeable number, because it can be changed into a prime (20313258659) 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 7 ways as a sum of consecutive naturals, for example, 1625231 + ... + 1637681.

It is an arithmetic number, because the mean of its divisors is an integer number (882535500).

Almost surely, 2^20313258656 is an apocalyptic number.

It is an amenable number.

20313258656 is an abundant number, since it is smaller than the sum of its proper divisors (22048445344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20313258656 is a wasteful number, since it uses less digits than its factorization.

20313258656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15477 (or 15469 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

Adding to 20313258656 its reverse (65685231302), we get a palindrome (85998489958).

The spelling of 20313258656 in words is "twenty billion, three hundred thirteen million, two hundred fifty-eight thousand, six hundred fifty-six".