256416810378 has 32 divisors (see below), whose sum is σ = 522986746176. Its totient is φ = 83783027328.

The previous prime is 256416810361. The next prime is 256416810383. The reversal of 256416810378 is 873018614652.

It is a self number, because there is not a number n which added to its sum of digits gives 256416810378.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18676 + ... + 716367.

It is an arithmetic number, because the mean of its divisors is an integer number (16343335818).

Almost surely, 2^256416810378 is an apocalyptic number.

256416810378 is an abundant number, since it is smaller than the sum of its proper divisors (266569935798).

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

256416810378 is a wasteful number, since it uses less digits than its factorization.

256416810378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736198.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 256416810378 in words is "two hundred fifty-six billion, four hundred sixteen million, eight hundred ten thousand, three hundred seventy-eight".