256506336267070 has 32 divisors (see below), whose sum is σ = 489402859636800. Its totient is φ = 96462012796416.

The previous prime is 256506336267043. The next prime is 256506336267101. The reversal of 256506336267070 is 70762633605652.

It is a junction number, because it is equal to n+sod(n) for n = 256506336266996 and 256506336267014.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 820769125 + ... + 821081584.

It is an arithmetic number, because the mean of its divisors is an integer number (15293839363650).

Almost surely, 2^{256506336267070} is an apocalyptic number.

256506336267070 is a deficient number, since it is larger than the sum of its proper divisors (232896523369730).

256506336267070 is a wasteful number, since it uses less digits than its factorization.

256506336267070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641851652.

The product of its (nonzero) digits is 57153600, while the sum is 58.

The spelling of 256506336267070 in words is "two hundred fifty-six trillion, five hundred six billion, three hundred thirty-six million, two hundred sixty-seven thousand, seventy".