205412214215 has 64 divisors (see below), whose sum is σ = 272987801856. Its totient is φ = 147445788672.

The previous prime is 205412214209. The next prime is 205412214257. The reversal of 205412214215 is 512412214502.

It is not a de Polignac number, because 205412214215 - 2²² = 205408019911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 212421662 + ... + 212422628.

It is an arithmetic number, because the mean of its divisors is an integer number (4265434404).

Almost surely, 2^205412214215 is an apocalyptic number.

205412214215 is a deficient number, since it is larger than the sum of its proper divisors (67575587641).

205412214215 is a wasteful number, since it uses less digits than its factorization.

205412214215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 205412214215 its reverse (512412214502), we get a palindrome (717824428717).

The spelling of 205412214215 in words is "two hundred five billion, four hundred twelve million, two hundred fourteen thousand, two hundred fifteen".