205155514553213 has 8 divisors (see below), whose sum is σ = 234464657430528. Its totient is φ = 175846674732624.

The previous prime is 205155514553191. The next prime is 205155514553257. The reversal of 205155514553213 is 312355415551502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205155514553213 - 2¹⁸ = 205155514291069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205155514553273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74311706 + ... + 77022987.

It is an arithmetic number, because the mean of its divisors is an integer number (29308082178816).

Almost surely, 2^{205155514553213} is an apocalyptic number.

It is an amenable number.

205155514553213 is a deficient number, since it is larger than the sum of its proper divisors (29309142877315).

205155514553213 is a wasteful number, since it uses less digits than its factorization.

205155514553213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151528363.

The product of its (nonzero) digits is 2250000, while the sum is 47.

The spelling of 205155514553213 in words is "two hundred five trillion, one hundred fifty-five billion, five hundred fourteen million, five hundred fifty-three thousand, two hundred thirteen".