205040220215 has 8 divisors (see below), whose sum is σ = 246060190800. Its totient is φ = 164024225152.

The previous prime is 205040220197. The next prime is 205040220247. The reversal of 205040220215 is 512022040502.

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 205040220215 - 2¹⁴ = 205040203831 is a prime.

It is a congruent number.

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, 879209 + ... + 1087698.

It is an arithmetic number, because the mean of its divisors is an integer number (30757523850).

Almost surely, 2^205040220215 is an apocalyptic number.

205040220215 is a deficient number, since it is larger than the sum of its proper divisors (41019970585).

205040220215 is a wasteful number, since it uses less digits than its factorization.

205040220215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987761.

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 205040220215 its reverse (512022040502), we get a palindrome (717062260717).

The spelling of 205040220215 in words is "two hundred five billion, forty million, two hundred twenty thousand, two hundred fifteen".