1158317579655 has 24 divisors (see below), whose sum is σ = 2125853441712. Its totient is φ = 581430000384.

The previous prime is 1158317579579. The next prime is 1158317579681. The reversal of 1158317579655 is 5569757138511.

It is a happy number.

1158317579655 is a `hidden beast` number, since 1 + 1 + 5 + 8 + 3 + 1 + 7 + 579 + 6 + 55 = 666.

It is not a de Polignac number, because 1158317579655 - 2¹⁶ = 1158317514119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1158317579592 and 1158317579601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 757069549 + ... + 757071078.

It is an arithmetic number, because the mean of its divisors is an integer number (88577226738).

Almost surely, 2^{1158317579655} is an apocalyptic number.

1158317579655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1158317579655 is a deficient number, since it is larger than the sum of its proper divisors (967535862057).

1158317579655 is a wasteful number, since it uses less digits than its factorization.

1158317579655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514140655 (or 1514140652 counting only the distinct ones).

The product of its digits is 39690000, while the sum is 63.

The spelling of 1158317579655 in words is "one trillion, one hundred fifty-eight billion, three hundred seventeen million, five hundred seventy-nine thousand, six hundred fifty-five".