206256531412 has 6 divisors (see below), whose sum is σ = 360948929978. Its totient is φ = 103128265704.

The previous prime is 206256531389. The next prime is 206256531421. The reversal of 206256531412 is 214135652602.

It can be written as a sum of positive squares in only one way, i.e., 170169450256 + 36087081156 = 412516^2 + 189966^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25782066423 + ... + 25782066430.

Almost surely, 2^206256531412 is an apocalyptic number.

It is an amenable number.

206256531412 is a deficient number, since it is larger than the sum of its proper divisors (154692398566).

206256531412 is a wasteful number, since it uses less digits than its factorization.

206256531412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51564132857 (or 51564132855 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 206256531412 in words is "two hundred six billion, two hundred fifty-six million, five hundred thirty-one thousand, four hundred twelve".