1155306643205 has 32 divisors (see below), whose sum is σ = 1645531227648. Its totient is φ = 767594649600.

The previous prime is 1155306643069. The next prime is 1155306643207. The reversal of 1155306643205 is 5023466035511.

It is a de Polignac number, because none of the positive numbers 2^k-1155306643205 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155306643207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8259581 + ... + 8398290.

It is an arithmetic number, because the mean of its divisors is an integer number (51422850864).

Almost surely, 2^{1155306643205} is an apocalyptic number.

It is an amenable number.

1155306643205 is a deficient number, since it is larger than the sum of its proper divisors (490224584443).

1155306643205 is a wasteful number, since it uses less digits than its factorization.

1155306643205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16657997.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 1155306643205 in words is "one trillion, one hundred fifty-five billion, three hundred six million, six hundred forty-three thousand, two hundred five".