206171070621607 has 8 divisors (see below), whose sum is σ = 253749009995936. Its totient is φ = 163124363568672.

The previous prime is 206171070621599. The next prime is 206171070621631. The reversal of 206171070621607 is 706126070171602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206171070621607 - 2³ = 206171070621599 is a prime.

It is a super-2 number, since 2×206171070621607² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206171070621907) 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, 1132808080248 + ... + 1132808080429.

It is an arithmetic number, because the mean of its divisors is an integer number (31718626249492).

Almost surely, 2^{206171070621607} is an apocalyptic number.

206171070621607 is a deficient number, since it is larger than the sum of its proper divisors (47577939374329).

206171070621607 is a wasteful number, since it uses less digits than its factorization.

206171070621607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265616160697.

The product of its (nonzero) digits is 296352, while the sum is 46.

The spelling of 206171070621607 in words is "two hundred six trillion, one hundred seventy-one billion, seventy million, six hundred twenty-one thousand, six hundred seven".