256012547207 has 8 divisors (see below), whose sum is σ = 261925321680. Its totient is φ = 250139859840.

The previous prime is 256012547173. The next prime is 256012547249. The reversal of 256012547207 is 702745210652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256012547207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256012547507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10008857 + ... + 10034402.

It is an arithmetic number, because the mean of its divisors is an integer number (32740665210).

Almost surely, 2^256012547207 is an apocalyptic number.

256012547207 is a deficient number, since it is larger than the sum of its proper divisors (5912774473).

256012547207 is a wasteful number, since it uses less digits than its factorization.

256012547207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20043553.

The product of its (nonzero) digits is 235200, while the sum is 41.

Adding to 256012547207 its reverse (702745210652), we get a palindrome (958757757859).

The spelling of 256012547207 in words is "two hundred fifty-six billion, twelve million, five hundred forty-seven thousand, two hundred seven".