256001463040 has 36 divisors (see below), whose sum is σ = 613203507504. Its totient is φ = 102400584704.

The previous prime is 256001463031. The next prime is 256001463059. The reversal of 256001463040 is 40364100652.

256001463040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 256001462993 and 256001463011.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99999292 + ... + 100001851.

It is an arithmetic number, because the mean of its divisors is an integer number (17033430764).

Almost surely, 2^256001463040 is an apocalyptic number.

256001463040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256001463040 is an abundant number, since it is smaller than the sum of its proper divisors (357202044464).

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

256001463040 is an equidigital number, since it uses as much as digits as its factorization.

256001463040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200001164 (or 200001150 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 256001463040 its reverse (40364100652), we get a palindrome (296365563692).

The spelling of 256001463040 in words is "two hundred fifty-six billion, one million, four hundred sixty-three thousand, forty".