256611036143 has 16 divisors (see below), whose sum is σ = 320007966720. Its totient is φ = 199908324000.

The previous prime is 256611036089. The next prime is 256611036167. The reversal of 256611036143 is 341630116652.

It is not a de Polignac number, because 256611036143 - 2³⁰ = 255537294319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256611036097 and 256611036106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256611036043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80408 + ... + 720893.

It is an arithmetic number, because the mean of its divisors is an integer number (20000497920).

Almost surely, 2^256611036143 is an apocalyptic number.

256611036143 is a deficient number, since it is larger than the sum of its proper divisors (63396930577).

256611036143 is a wasteful number, since it uses less digits than its factorization.

256611036143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805478.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 256611036143 in words is "two hundred fifty-six billion, six hundred eleven million, thirty-six thousand, one hundred forty-three".