206105546315 has 4 divisors (see below), whose sum is σ = 247326655584. Its totient is φ = 164884437048.

The previous prime is 206105546303. The next prime is 206105546323. The reversal of 206105546315 is 513645501602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 513645501602 = 2 ⋅256822750801.

It is a cyclic number.

It is not a de Polignac number, because 206105546315 - 2¹² = 206105542219 is a prime.

It is a super-2 number, since 2×206105546315² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20610554627 + ... + 20610554636.

It is an arithmetic number, because the mean of its divisors is an integer number (61831663896).

Almost surely, 2^206105546315 is an apocalyptic number.

206105546315 is a deficient number, since it is larger than the sum of its proper divisors (41221109269).

206105546315 is an equidigital number, since it uses as much as digits as its factorization.

206105546315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41221109268.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 206105546315 in words is "two hundred six billion, one hundred five million, five hundred forty-six thousand, three hundred fifteen".