256734131255044 has 12 divisors (see below), whose sum is σ = 468818848378944. Its totient is φ = 122785888861064.

The previous prime is 256734131255029. The next prime is 256734131255081. The reversal of 256734131255044 is 440552131437652.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 256734131254982 and 256734131255000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1395294191512 + ... + 1395294191695.

It is an arithmetic number, because the mean of its divisors is an integer number (39068237364912).

Almost surely, 2^{256734131255044} is an apocalyptic number.

It is an amenable number.

256734131255044 is a deficient number, since it is larger than the sum of its proper divisors (212084717123900).

256734131255044 is a wasteful number, since it uses less digits than its factorization.

256734131255044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790588383234 (or 2790588383232 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 52.

The spelling of 256734131255044 in words is "two hundred fifty-six trillion, seven hundred thirty-four billion, one hundred thirty-one million, two hundred fifty-five thousand, forty-four".