256833018378 has 32 divisors (see below), whose sum is σ = 570759073920. Its totient is φ = 85608151200.

The previous prime is 256833018361. The next prime is 256833018397. The reversal of 256833018378 is 873810338652.

256833018378 is a `hidden beast` number, since 2 + 5 + 68 + 330 + 183 + 78 = 666.

256833018378 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 2108926 + ... + 2227382.

It is an arithmetic number, because the mean of its divisors is an integer number (17836221060).

Almost surely, 2^256833018378 is an apocalyptic number.

256833018378 is an abundant number, since it is smaller than the sum of its proper divisors (313926055542).

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

256833018378 is a wasteful number, since it uses less digits than its factorization.

256833018378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158619 (or 158613 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 256833018378 in words is "two hundred fifty-six billion, eight hundred thirty-three million, eighteen thousand, three hundred seventy-eight".