206510516552 has 8 divisors (see below), whose sum is σ = 387207218550. Its totient is φ = 103255258272.

The previous prime is 206510516501. The next prime is 206510516591. The reversal of 206510516552 is 255615015602.

It can be written as a sum of positive squares in only one way, i.e., 201444778276 + 5065738276 = 448826^2 + 71174^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12906907277 + ... + 12906907292.

Almost surely, 2^206510516552 is an apocalyptic number.

It is an amenable number.

206510516552 is a deficient number, since it is larger than the sum of its proper divisors (180696701998).

206510516552 is a wasteful number, since it uses less digits than its factorization.

206510516552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25813814575 (or 25813814571 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 206510516552 in words is "two hundred six billion, five hundred ten million, five hundred sixteen thousand, five hundred fifty-two".