256141131436 has 24 divisors (see below), whose sum is σ = 470086444800. Its totient is φ = 121886682192.

The previous prime is 256141131427. The next prime is 256141131469. The reversal of 256141131436 is 634131141652.

It is a junction number, because it is equal to n+sod(n) for n = 256141131395 and 256141131404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6977026 + ... + 7013641.

It is an arithmetic number, because the mean of its divisors is an integer number (19586935200).

Almost surely, 2^256141131436 is an apocalyptic number.

It is an amenable number.

256141131436 is a deficient number, since it is larger than the sum of its proper divisors (213945313364).

256141131436 is a wasteful number, since it uses less digits than its factorization.

256141131436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13990893 (or 13990891 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The spelling of 256141131436 in words is "two hundred fifty-six billion, one hundred forty-one million, one hundred thirty-one thousand, four hundred thirty-six".