158461599099 has 4 divisors (see below), whose sum is σ = 211282132136. Its totient is φ = 105641066064.

The previous prime is 158461599073. The next prime is 158461599137. The reversal of 158461599099 is 990995164851.

158461599099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 158461599099 - 2⁵ = 158461599067 is a prime.

It is a super-2 number, since 2×158461599099² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158461599199) 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, 26410266514 + ... + 26410266519.

It is an arithmetic number, because the mean of its divisors is an integer number (52820533034).

Almost surely, 2^158461599099 is an apocalyptic number.

158461599099 is a deficient number, since it is larger than the sum of its proper divisors (52820533037).

158461599099 is an equidigital number, since it uses as much as digits as its factorization.

158461599099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52820533036.

The product of its (nonzero) digits is 31492800, while the sum is 66.

The spelling of 158461599099 in words is "one hundred fifty-eight billion, four hundred sixty-one million, five hundred ninety-nine thousand, ninety-nine".