206106522556 has 12 divisors (see below), whose sum is σ = 393476088600. Its totient is φ = 93684782960.

The previous prime is 206106522541. The next prime is 206106522577. The reversal of 206106522556 is 655225601602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2342119531 + ... + 2342119618.

It is an arithmetic number, because the mean of its divisors is an integer number (32789674050).

Almost surely, 2^206106522556 is an apocalyptic number.

It is an amenable number.

206106522556 is a deficient number, since it is larger than the sum of its proper divisors (187369566044).

206106522556 is a wasteful number, since it uses less digits than its factorization.

206106522556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684239164 (or 4684239162 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 206106522556 in words is "two hundred six billion, one hundred six million, five hundred twenty-two thousand, five hundred fifty-six".