206120130556 has 24 divisors (see below), whose sum is σ = 379735328000. Its totient is φ = 97625475504.

The previous prime is 206120130481. The next prime is 206120130581. The reversal of 206120130556 is 655031021602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600925 + ... + 879403.

Almost surely, 2^206120130556 is an apocalyptic number.

It is an amenable number.

206120130556 is a deficient number, since it is larger than the sum of its proper divisors (173615197444).

206120130556 is a wasteful number, since it uses less digits than its factorization.

206120130556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288241 (or 288239 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 206120130556 in words is "two hundred six billion, one hundred twenty million, one hundred thirty thousand, five hundred fifty-six".