205150043155 has 8 divisors (see below), whose sum is σ = 246183775200. Its totient is φ = 164117552256.

The previous prime is 205150043113. The next prime is 205150043171. The reversal of 205150043155 is 551340051502.

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 205150043155 - 2²⁵ = 205116488723 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103531 + ... + 648859.

It is an arithmetic number, because the mean of its divisors is an integer number (30772971900).

Almost surely, 2^205150043155 is an apocalyptic number.

205150043155 is a deficient number, since it is larger than the sum of its proper divisors (41033732045).

205150043155 is an equidigital number, since it uses as much as digits as its factorization.

205150043155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620573.

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 205150043155 its reverse (551340051502), we get a palindrome (756490094657).

The spelling of 205150043155 in words is "two hundred five billion, one hundred fifty million, forty-three thousand, one hundred fifty-five".