1205247169049 has 32 divisors (see below), whose sum is σ = 1623506976000. Its totient is φ = 883909259520.

The previous prime is 1205247169037. The next prime is 1205247169069. The reversal of 1205247169049 is 9409617425021.

It is not a de Polignac number, because 1205247169049 - 2⁸ = 1205247168793 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1205247168988 and 1205247169006.

It is not an unprimeable number, because it can be changed into a prime (1205247169069) 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 31 ways as a sum of consecutive naturals, for example, 9331154 + ... + 9459435.

It is an arithmetic number, because the mean of its divisors is an integer number (50734593000).

Almost surely, 2^{1205247169049} is an apocalyptic number.

It is an amenable number.

1205247169049 is a deficient number, since it is larger than the sum of its proper divisors (418259806951).

1205247169049 is a wasteful number, since it uses less digits than its factorization.

1205247169049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18790638 (or 18790624 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 1205247169049 in words is "one trillion, two hundred five billion, two hundred forty-seven million, one hundred sixty-nine thousand, forty-nine".