206173150656 has 84 divisors (see below), whose sum is σ = 599599015176. Its totient is φ = 62476705280.

The previous prime is 206173150637. The next prime is 206173150661. The reversal of 206173150656 is 656051371602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4414035 + ... + 4460498.

It is an arithmetic number, because the mean of its divisors is an integer number (7138083514).

Almost surely, 2^206173150656 is an apocalyptic number.

It is an amenable number.

206173150656 is an abundant number, since it is smaller than the sum of its proper divisors (393425864520).

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

206173150656 is a wasteful number, since it uses less digits than its factorization.

206173150656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8874570 (or 8874549 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 206173150656 in words is "two hundred six billion, one hundred seventy-three million, one hundred fifty thousand, six hundred fifty-six".