256560547334700 has 288 divisors, whose sum is σ = 860373270586368. Its totient is φ = 57812138496000.

The previous prime is 256560547334683. The next prime is 256560547334743. The reversal of 256560547334700 is 7433745065652.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2260448352 + ... + 2260561848.

It is an arithmetic number, because the mean of its divisors is an integer number (2987407189536).

Almost surely, 2^{256560547334700} is an apocalyptic number.

256560547334700 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 256560547334700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430186635293184).

256560547334700 is an abundant number, since it is smaller than the sum of its proper divisors (603812723251668).

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

256560547334700 is a wasteful number, since it uses less digits than its factorization.

256560547334700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128753 (or 128746 counting only the distinct ones).

The product of its (nonzero) digits is 63504000, while the sum is 57.

The spelling of 256560547334700 in words is "two hundred fifty-six trillion, five hundred sixty billion, five hundred forty-seven million, three hundred thirty-four thousand, seven hundred".