205102243444 has 12 divisors (see below), whose sum is σ = 410204486944. Its totient is φ = 87900961464.

The previous prime is 205102243403. The next prime is 205102243469. The reversal of 205102243444 is 444342201502.

205102243444 is an admirable number.

It is a super-2 number, since 2×205102243444² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3662540034 + ... + 3662540089.

Almost surely, 2^205102243444 is an apocalyptic number.

It is an amenable number.

205102243444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205102243444 is a wasteful number, since it uses less digits than its factorization.

205102243444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7325080134 (or 7325080132 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 205102243444 its reverse (444342201502), we get a palindrome (649444444946).

The spelling of 205102243444 in words is "two hundred five billion, one hundred two million, two hundred forty-three thousand, four hundred forty-four".