256402151118 has 48 divisors (see below), whose sum is σ = 556310205360. Its totient is φ = 85348677888.

The previous prime is 256402151077. The next prime is 256402151149. The reversal of 256402151118 is 811151204652.

256402151118 is a `hidden beast` number, since 2 + 5 + 640 + 2 + 1 + 5 + 1 + 1 + 1 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72901896 + ... + 72905412.

It is an arithmetic number, because the mean of its divisors is an integer number (11589795945).

Almost surely, 2^256402151118 is an apocalyptic number.

256402151118 is an abundant number, since it is smaller than the sum of its proper divisors (299908054242).

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

256402151118 is a wasteful number, since it uses less digits than its factorization.

256402151118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8001 (or 7998 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The spelling of 256402151118 in words is "two hundred fifty-six billion, four hundred two million, one hundred fifty-one thousand, one hundred eighteen".