1158279282865 has 16 divisors (see below), whose sum is σ = 1413750402576. Its totient is φ = 910768723200.

The previous prime is 1158279282857. The next prime is 1158279282869. The reversal of 1158279282865 is 5682829728511.

It can be written as a sum of positive squares in 8 ways, for example, as 23824231201 + 1134455051664 = 154351^2 + 1065108^2 .

It is not a de Polignac number, because 1158279282865 - 2³ = 1158279282857 is a prime.

It is a super-2 number, since 2×1158279282865² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1158279282797 and 1158279282806.

It is not an unprimeable number, because it can be changed into a prime (1158279282869) 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 15 ways as a sum of consecutive naturals, for example, 964206 + ... + 1801735.

It is an arithmetic number, because the mean of its divisors is an integer number (88359400161).

Almost surely, 2^{1158279282865} is an apocalyptic number.

It is an amenable number.

1158279282865 is a deficient number, since it is larger than the sum of its proper divisors (255471119711).

1158279282865 is a wasteful number, since it uses less digits than its factorization.

1158279282865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767380.

The product of its digits is 38707200, while the sum is 64.

The spelling of 1158279282865 in words is "one trillion, one hundred fifty-eight billion, two hundred seventy-nine million, two hundred eighty-two thousand, eight hundred sixty-five".