205352223249 has 8 divisors (see below), whose sum is σ = 277268824960. Its totient is φ = 135168551856.

The previous prime is 205352223247. The next prime is 205352223287. The reversal of 205352223249 is 942322253502.

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

It is not a de Polignac number, because 205352223249 - 2¹ = 205352223247 is a prime.

It is a super-2 number, since 2×205352223249² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205352223247) 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, 433232302 + ... + 433232775.

It is an arithmetic number, because the mean of its divisors is an integer number (34658603120).

Almost surely, 2^205352223249 is an apocalyptic number.

It is an amenable number.

205352223249 is a deficient number, since it is larger than the sum of its proper divisors (71916601711).

205352223249 is an equidigital number, since it uses as much as digits as its factorization.

205352223249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866465159.

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 205352223249 in words is "two hundred five billion, three hundred fifty-two million, two hundred twenty-three thousand, two hundred forty-nine".