256402151076 has 48 divisors (see below), whose sum is σ = 628840404864. Its totient is φ = 81154672896.

The previous prime is 256402151063. The next prime is 256402151077. The reversal of 256402151076 is 670151204652.

256402151076 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (256402151077) by changing a digit.

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, 3352675 + ... + 3428298.

It is an arithmetic number, because the mean of its divisors is an integer number (13100841768).

Almost surely, 2^256402151076 is an apocalyptic number.

It is an amenable number.

256402151076 is an abundant number, since it is smaller than the sum of its proper divisors (372438253788).

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

256402151076 is a wasteful number, since it uses less digits than its factorization.

256402151076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781140 (or 6781138 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 256402151076 in words is "two hundred fifty-six billion, four hundred two million, one hundred fifty-one thousand, seventy-six".