206572655466 has 12 divisors (see below), whose sum is σ = 447574086882. Its totient is φ = 68857551816.

The previous prime is 206572655459. The next prime is 206572655467. The reversal of 206572655466 is 664556275602.

206572655466 is a `hidden beast` number, since 2 + 0 + 6 + 5 + 7 + 26 + 554 + 66 = 666.

It can be written as a sum of positive squares in only one way, i.e., 194234999841 + 12337655625 = 440721^2 + 111075^2 .

It is not an unprimeable number, because it can be changed into a prime (206572655467) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5738129301 + ... + 5738129336.

Almost surely, 2^206572655466 is an apocalyptic number.

206572655466 is an abundant number, since it is smaller than the sum of its proper divisors (241001431416).

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

206572655466 is a wasteful number, since it uses less digits than its factorization.

206572655466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11476258645 (or 11476258642 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 54.

The spelling of 206572655466 in words is "two hundred six billion, five hundred seventy-two million, six hundred fifty-five thousand, four hundred sixty-six".