256316220053020 has 96 divisors (see below), whose sum is σ = 548857307492928. Its totient is φ = 100511838216192.

The previous prime is 256316220052999. The next prime is 256316220053021. The reversal of 256316220053020 is 20350022613652.

256316220053020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×256316220053020² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256316220053021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10859464539 + ... + 10859488141.

It is an arithmetic number, because the mean of its divisors is an integer number (5717263619718).

Almost surely, 2^{256316220053020} is an apocalyptic number.

256316220053020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256316220053020 is an abundant number, since it is smaller than the sum of its proper divisors (292541087439908).

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

256316220053020 is a wasteful number, since it uses less digits than its factorization.

256316220053020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31399 (or 31397 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 256316220053020 its reverse (20350022613652), we get a palindrome (276666242666672).

The spelling of 256316220053020 in words is "two hundred fifty-six trillion, three hundred sixteen billion, two hundred twenty million, fifty-three thousand, twenty".