256393034474 has 8 divisors (see below), whose sum is σ = 401310836640. Its totient is φ = 122622755596.

The previous prime is 256393034473. The next prime is 256393034507. The reversal of 256393034474 is 474430393652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (256393034473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2786880764 + ... + 2786880855.

It is an arithmetic number, because the mean of its divisors is an integer number (50163854580).

Almost surely, 2^256393034474 is an apocalyptic number.

256393034474 is a deficient number, since it is larger than the sum of its proper divisors (144917802166).

256393034474 is a wasteful number, since it uses less digits than its factorization.

256393034474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573761644.

The product of its (nonzero) digits is 6531840, while the sum is 50.

The spelling of 256393034474 in words is "two hundred fifty-six billion, three hundred ninety-three million, thirty-four thousand, four hundred seventy-four".