206256140163556 has 24 divisors (see below), whose sum is σ = 436777708582656. Its totient is φ = 83195754015360.

The previous prime is 206256140163487. The next prime is 206256140163611. The reversal of 206256140163556 is 655361041652602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216655608940 + ... + 216655609891.

It is an arithmetic number, because the mean of its divisors is an integer number (18199071190944).

Almost surely, 2^{206256140163556} is an apocalyptic number.

It is an amenable number.

206256140163556 is an abundant number, since it is smaller than the sum of its proper divisors (230521568419100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206256140163556 is a wasteful number, since it uses less digits than its factorization.

206256140163556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433311218859 (or 433311218857 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 52.

The spelling of 206256140163556 in words is "two hundred six trillion, two hundred fifty-six billion, one hundred forty million, one hundred sixty-three thousand, five hundred fifty-six".