206553477673 has 16 divisors (see below), whose sum is σ = 230326416000. Its totient is φ = 184081911552.

The previous prime is 206553477649. The next prime is 206553477733. The reversal of 206553477673 is 376774355602.

It is a cyclic number.

It is not a de Polignac number, because 206553477673 - 2¹³ = 206553469481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206553477773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 513748 + ... + 822826.

It is an arithmetic number, because the mean of its divisors is an integer number (14395401000).

Almost surely, 2^206553477673 is an apocalyptic number.

It is an amenable number.

206553477673 is a deficient number, since it is larger than the sum of its proper divisors (23772938327).

206553477673 is a wasteful number, since it uses less digits than its factorization.

206553477673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311184.

The product of its (nonzero) digits is 22226400, while the sum is 55.

The spelling of 206553477673 in words is "two hundred six billion, five hundred fifty-three million, four hundred seventy-seven thousand, six hundred seventy-three".