1155705651617 has 36 divisors (see below), whose sum is σ = 1371880263600. Its totient is φ = 972195451920.

The previous prime is 1155705651599. The next prime is 1155705651649. The reversal of 1155705651617 is 7161565075511.

It is not a de Polignac number, because 1155705651617 - 2¹² = 1155705647521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155705651517) 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 35 ways as a sum of consecutive naturals, for example, 1570634 + ... + 2185932.

It is an arithmetic number, because the mean of its divisors is an integer number (38107785100).

Almost surely, 2^{1155705651617} is an apocalyptic number.

It is an amenable number.

1155705651617 is a deficient number, since it is larger than the sum of its proper divisors (216174611983).

1155705651617 is a wasteful number, since it uses less digits than its factorization.

1155705651617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615402 (or 615372 counting only the distinct ones).

The product of its (nonzero) digits is 1102500, while the sum is 50.

The spelling of 1155705651617 in words is "one trillion, one hundred fifty-five billion, seven hundred five million, six hundred fifty-one thousand, six hundred seventeen".