206690867412 has 12 divisors (see below), whose sum is σ = 482278690656. Its totient is φ = 68896955800.

The previous prime is 206690867407. The next prime is 206690867413. The reversal of 206690867412 is 214768096602.

206690867412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×206690867412² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206690867413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8612119464 + ... + 8612119487.

It is an arithmetic number, because the mean of its divisors is an integer number (40189890888).

Almost surely, 2^206690867412 is an apocalyptic number.

It is an amenable number.

206690867412 is an abundant number, since it is smaller than the sum of its proper divisors (275587823244).

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

206690867412 is a wasteful number, since it uses less digits than its factorization.

206690867412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17224238958 (or 17224238956 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 206690867412 in words is "two hundred six billion, six hundred ninety million, eight hundred sixty-seven thousand, four hundred twelve".