256766755918 has 16 divisors (see below), whose sum is σ = 398096841600. Its totient is φ = 124078694400.

The previous prime is 256766755913. The next prime is 256766755981. The reversal of 256766755918 is 819557667652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256766755913) 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, 2673843 + ... + 2768206.

It is an arithmetic number, because the mean of its divisors is an integer number (24881052600).

Almost surely, 2^256766755918 is an apocalyptic number.

256766755918 is a deficient number, since it is larger than the sum of its proper divisors (141330085682).

256766755918 is a wasteful number, since it uses less digits than its factorization.

256766755918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5442843.

The product of its digits is 190512000, while the sum is 67.

The spelling of 256766755918 in words is "two hundred fifty-six billion, seven hundred sixty-six million, seven hundred fifty-five thousand, nine hundred eighteen".