206661677602234 has 16 divisors (see below), whose sum is σ = 310831540175520. Its totient is φ = 103051201231440.

The previous prime is 206661677602231. The next prime is 206661677602243. The reversal of 206661677602234 is 432206776166602.

It is a super-2 number, since 2×206661677602234² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206661677602231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1925977 + ... + 20421379.

It is an arithmetic number, because the mean of its divisors is an integer number (19426971260970).

Almost surely, 2^{206661677602234} is an apocalyptic number.

206661677602234 is a deficient number, since it is larger than the sum of its proper divisors (104169862573286).

206661677602234 is a wasteful number, since it uses less digits than its factorization.

206661677602234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18510525.

The product of its (nonzero) digits is 36578304, while the sum is 58.

The spelling of 206661677602234 in words is "two hundred six trillion, six hundred sixty-one billion, six hundred seventy-seven million, six hundred two thousand, two hundred thirty-four".