256602319486 has 16 divisors (see below), whose sum is σ = 393927046128. Its totient is φ = 125294400000.

The previous prime is 256602319439. The next prime is 256602319543. The reversal of 256602319486 is 684913206652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201886 + ... + 744286.

It is an arithmetic number, because the mean of its divisors is an integer number (24620440383).

Almost surely, 2^256602319486 is an apocalyptic number.

256602319486 is a deficient number, since it is larger than the sum of its proper divisors (137324726642).

256602319486 is a wasteful number, since it uses less digits than its factorization.

256602319486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547947.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 256602319486 in words is "two hundred fifty-six billion, six hundred two million, three hundred nineteen thousand, four hundred eighty-six".