256623314370324 has 192 divisors, whose sum is σ = 672976173821952. Its totient is φ = 75426291763200.

The previous prime is 256623314370271. The next prime is 256623314370343. The reversal of 256623314370324 is 423073413326652.

It is a super-2 number, since 2×256623314370324² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20394439737 + ... + 20394452319.

It is an arithmetic number, because the mean of its divisors is an integer number (3505084238656).

Almost surely, 2^{256623314370324} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256623314370324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336488086910976).

256623314370324 is an abundant number, since it is smaller than the sum of its proper divisors (416352859451628).

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

256623314370324 is a wasteful number, since it uses less digits than its factorization.

256623314370324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25366 (or 25364 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 51.

Adding to 256623314370324 its reverse (423073413326652), we get a palindrome (679696727696976).

The spelling of 256623314370324 in words is "two hundred fifty-six trillion, six hundred twenty-three billion, three hundred fourteen million, three hundred seventy thousand, three hundred twenty-four".