256723896000 has 1792 divisors, whose sum is σ = 1090655354880. Its totient is φ = 52254720000.

The previous prime is 256723895957. The next prime is 256723896059. The reversal of 256723896000 is 698327652.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 2021447937 + ... + 2021448063.

It is an arithmetic number, because the mean of its divisors is an integer number (608624640).

Almost surely, 2^256723896000 is an apocalyptic number.

256723896000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256723896000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (545327677440).

256723896000 is an abundant number, since it is smaller than the sum of its proper divisors (833931458880).

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

256723896000 is a wasteful number, since it uses less digits than its factorization.

256723896000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 256723896000 in words is "two hundred fifty-six billion, seven hundred twenty-three million, eight hundred ninety-six thousand".