206512105204 has 48 divisors (see below), whose sum is σ = 381874489920. Its totient is φ = 97578673920.

The previous prime is 206512105201. The next prime is 206512105231. The reversal of 206512105204 is 402501215602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206512105201) 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, 1016227 + ... + 1202389.

It is an arithmetic number, because the mean of its divisors is an integer number (7955718540).

Almost surely, 2^206512105204 is an apocalyptic number.

It is an amenable number.

206512105204 is a deficient number, since it is larger than the sum of its proper divisors (175362384716).

206512105204 is a wasteful number, since it uses less digits than its factorization.

206512105204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186400 (or 186398 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The spelling of 206512105204 in words is "two hundred six billion, five hundred twelve million, one hundred five thousand, two hundred four".