206115170745 has 32 divisors (see below), whose sum is σ = 362352936960. Its totient is φ = 99215663040.

The previous prime is 206115170741. The next prime is 206115170759. The reversal of 206115170745 is 547071511602.

It is not a de Polignac number, because 206115170745 - 2² = 206115170741 is a prime.

It is a super-2 number, since 2×206115170745² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (206115170741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4470529 + ... + 4516398.

It is an arithmetic number, because the mean of its divisors is an integer number (11323529280).

Almost surely, 2^206115170745 is an apocalyptic number.

It is an amenable number.

206115170745 is a deficient number, since it is larger than the sum of its proper divisors (156237766215).

206115170745 is a wasteful number, since it uses less digits than its factorization.

206115170745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8987085.

The product of its (nonzero) digits is 58800, while the sum is 39.

The spelling of 206115170745 in words is "two hundred six billion, one hundred fifteen million, one hundred seventy thousand, seven hundred forty-five".