256326957048712 has 64 divisors (see below), whose sum is σ = 559673388518400. Its totient is φ = 108825381000000.

The previous prime is 256326957048691. The next prime is 256326957048761. The reversal of 256326957048712 is 217840759623652.

It is a super-2 number, since 2×256326957048712² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1079498164 + ... + 1079735587.

It is an arithmetic number, because the mean of its divisors is an integer number (8744896695600).

It is a 1-persistent number, because it is pandigital, but 2⋅256326957048712 = 512653914097424 is not.

Almost surely, 2^{256326957048712} is an apocalyptic number.

256326957048712 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256326957048712 is an abundant number, since it is smaller than the sum of its proper divisors (303346431469688).

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

256326957048712 is a wasteful number, since it uses less digits than its factorization.

256326957048712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2159233858 (or 2159233854 counting only the distinct ones).

The product of its (nonzero) digits is 304819200, while the sum is 67.

The spelling of 256326957048712 in words is "two hundred fifty-six trillion, three hundred twenty-six billion, nine hundred fifty-seven million, forty-eight thousand, seven hundred twelve".