1155521647285 has 16 divisors (see below), whose sum is σ = 1469315681856. Its totient is φ = 869374067968.

The previous prime is 1155521647277. The next prime is 1155521647297. The reversal of 1155521647285 is 5827461255511.

It is a cyclic number.

It is not a de Polignac number, because 1155521647285 - 2³ = 1155521647277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5089507 + ... + 5311696.

It is an arithmetic number, because the mean of its divisors is an integer number (91832230116).

Almost surely, 2^{1155521647285} is an apocalyptic number.

It is an amenable number.

1155521647285 is a deficient number, since it is larger than the sum of its proper divisors (313794034571).

1155521647285 is a wasteful number, since it uses less digits than its factorization.

1155521647285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10402532.

The product of its digits is 3360000, while the sum is 52.

The spelling of 1155521647285 in words is "one trillion, one hundred fifty-five billion, five hundred twenty-one million, six hundred forty-seven thousand, two hundred eighty-five".