206195377672 has 16 divisors (see below), whose sum is σ = 393910981740. Its totient is φ = 101152449216.

The previous prime is 206195377639. The next prime is 206195377691. The reversal of 206195377672 is 276773591602.

It can be written as a sum of positive squares in 2 ways, for example, as 201893854276 + 4301523396 = 449326^2 + 65586^2 .

It is a super-2 number, since 2×206195377672² (a number of 23 digits) contains 22 as substring.

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, 243154503 + ... + 243155350.

Almost surely, 2^206195377672 is an apocalyptic number.

It is an amenable number.

206195377672 is a deficient number, since it is larger than the sum of its proper divisors (187715604068).

206195377672 is a wasteful number, since it uses less digits than its factorization.

206195377672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486309912 (or 486309908 counting only the distinct ones).

The product of its (nonzero) digits is 6667920, while the sum is 55.

The spelling of 206195377672 in words is "two hundred six billion, one hundred ninety-five million, three hundred seventy-seven thousand, six hundred seventy-two".