206224149815 has 4 divisors (see below), whose sum is σ = 247468979784. Its totient is φ = 164979319848.

The previous prime is 206224149727. The next prime is 206224149839. The reversal of 206224149815 is 518941422602.

206224149815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206224149815 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20622414977 + ... + 20622414986.

It is an arithmetic number, because the mean of its divisors is an integer number (61867244946).

Almost surely, 2^206224149815 is an apocalyptic number.

206224149815 is a deficient number, since it is larger than the sum of its proper divisors (41244829969).

206224149815 is an equidigital number, since it uses as much as digits as its factorization.

206224149815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41244829968.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 206224149815 in words is "two hundred six billion, two hundred twenty-four million, one hundred forty-nine thousand, eight hundred fifteen".