256547035105 has 16 divisors (see below), whose sum is σ = 327427398144. Its totient is φ = 192298602240.

The previous prime is 256547035103. The next prime is 256547035153. The reversal of 256547035105 is 501530745652.

It is not a de Polignac number, because 256547035105 - 2¹ = 256547035103 is a prime.

It is a super-2 number, since 2×256547035105² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256547035103) by changing a digit.

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, 6748311 + ... + 6786220.

It is an arithmetic number, because the mean of its divisors is an integer number (20464212384).

Almost surely, 2^256547035105 is an apocalyptic number.

It is an amenable number.

256547035105 is a deficient number, since it is larger than the sum of its proper divisors (70880363039).

256547035105 is a wasteful number, since it uses less digits than its factorization.

256547035105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13534776.

The product of its (nonzero) digits is 630000, while the sum is 43.

The spelling of 256547035105 in words is "two hundred fifty-six billion, five hundred forty-seven million, thirty-five thousand, one hundred five".