1158099863886 has 96 divisors (see below), whose sum is σ = 2917212262848. Its totient is φ = 325217779200.

The previous prime is 1158099863873. The next prime is 1158099863887. The reversal of 1158099863886 is 6883689908511.

1158099863886 is a `hidden beast` number, since 1 + 1 + 5 + 80 + 99 + 86 + 388 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158099863887) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1411336 + ... + 2075588.

It is an arithmetic number, because the mean of its divisors is an integer number (30387627738).

Almost surely, 2^{1158099863886} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1158099863886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458606131424).

1158099863886 is an abundant number, since it is smaller than the sum of its proper divisors (1759112398962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1158099863886 is a wasteful number, since it uses less digits than its factorization.

1158099863886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664506 (or 664503 counting only the distinct ones).

The product of its (nonzero) digits is 179159040, while the sum is 72.

The spelling of 1158099863886 in words is "one trillion, one hundred fifty-eight billion, ninety-nine million, eight hundred sixty-three thousand, eight hundred eighty-six".