1158275604881 has 4 divisors (see below), whose sum is σ = 1158283021092. Its totient is φ = 1158268188672.

The previous prime is 1158275604851. The next prime is 1158275604979. The reversal of 1158275604881 is 1884065728511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 176622670225 + 981652934656 = 420265^2 + 990784^2 .

It is a cyclic number.

It is not a de Polignac number, because 1158275604881 - 2⁶ = 1158275604817 is a prime.

It is a super-2 number, since 2×1158275604881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1158275604851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3468680 + ... + 3787913.

It is an arithmetic number, because the mean of its divisors is an integer number (289570755273).

Almost surely, 2^{1158275604881} is an apocalyptic number.

It is an amenable number.

1158275604881 is a deficient number, since it is larger than the sum of its proper divisors (7416211).

1158275604881 is an equidigital number, since it uses as much as digits as its factorization.

1158275604881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7416210.

The product of its (nonzero) digits is 4300800, while the sum is 56.

The spelling of 1158275604881 in words is "one trillion, one hundred fifty-eight billion, two hundred seventy-five million, six hundred four thousand, eight hundred eighty-one".