205351551223 has 8 divisors (see below), whose sum is σ = 252740370848. Its totient is φ = 162475952544.

The previous prime is 205351551191. The next prime is 205351551233. The reversal of 205351551223 is 322155153502.

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 205351551223 - 2⁵ = 205351551191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205351551233) 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, 1128305136 + ... + 1128305317.

It is an arithmetic number, because the mean of its divisors is an integer number (31592546356).

Almost surely, 2^205351551223 is an apocalyptic number.

205351551223 is a deficient number, since it is larger than the sum of its proper divisors (47388819625).

205351551223 is a wasteful number, since it uses less digits than its factorization.

205351551223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256610473.

The product of its (nonzero) digits is 45000, while the sum is 34.

The spelling of 205351551223 in words is "two hundred five billion, three hundred fifty-one million, five hundred fifty-one thousand, two hundred twenty-three".