1155912571009 has 16 divisors (see below), whose sum is σ = 1324995222528. Its totient is φ = 987818620752.

The previous prime is 1155912570991. The next prime is 1155912571019. The reversal of 1155912571009 is 9001752195511.

It is a cyclic number.

It is not a de Polignac number, because 1155912571009 - 2¹¹ = 1155912568961 is a prime.

It is a super-3 number, since 3×1155912571009³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155912571009.

It is not an unprimeable number, because it can be changed into a prime (1155912571019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28600714 + ... + 28641100.

It is an arithmetic number, because the mean of its divisors is an integer number (82812201408).

Almost surely, 2^{1155912571009} is an apocalyptic number.

It is an amenable number.

1155912571009 is a deficient number, since it is larger than the sum of its proper divisors (169082651519).

1155912571009 is a wasteful number, since it uses less digits than its factorization.

1155912571009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52524.

The product of its (nonzero) digits is 141750, while the sum is 46.

The spelling of 1155912571009 in words is "one trillion, one hundred fifty-five billion, nine hundred twelve million, five hundred seventy-one thousand, nine".