256046421312426 has 16 divisors (see below), whose sum is σ = 516001948295328. Its totient is φ = 84697289492400.

The previous prime is 256046421312347. The next prime is 256046421312431. The reversal of 256046421312426 is 624213124640652.

It is a happy number.

It is a super-3 number, since 3×256046421312426³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162879402085 + ... + 162879403656.

It is an arithmetic number, because the mean of its divisors is an integer number (32250121768458).

Almost surely, 2^{256046421312426} is an apocalyptic number.

256046421312426 is an abundant number, since it is smaller than the sum of its proper divisors (259955526982902).

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

256046421312426 is a wasteful number, since it uses less digits than its factorization.

256046421312426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325758805877.

The product of its (nonzero) digits is 3317760, while the sum is 48.

The spelling of 256046421312426 in words is "two hundred fifty-six trillion, forty-six billion, four hundred twenty-one million, three hundred twelve thousand, four hundred twenty-six".