1205852411457 has 12 divisors (see below), whose sum is σ = 1749014150884. Its totient is φ = 800565914880.

The previous prime is 1205852411419. The next prime is 1205852411461. The reversal of 1205852411457 is 7541142585021.

1205852411457 is a `hidden beast` number, since 1 + 2 + 0 + 5 + 8 + 524 + 114 + 5 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 380727254961 + 825125156496 = 617031^2 + 908364^2 .

It is not a de Polignac number, because 1205852411457 - 2¹⁹ = 1205851887169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205852421457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277972108 + ... + 277976445.

Almost surely, 2^{1205852411457} is an apocalyptic number.

It is an amenable number.

1205852411457 is a deficient number, since it is larger than the sum of its proper divisors (543161739427).

1205852411457 is a wasteful number, since it uses less digits than its factorization.

1205852411457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555948800 (or 555948797 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 45.

Adding to 1205852411457 its reverse (7541142585021), we get a palindrome (8746994996478).

The spelling of 1205852411457 in words is "one trillion, two hundred five billion, eight hundred fifty-two million, four hundred eleven thousand, four hundred fifty-seven".