158172197995 has 16 divisors (see below), whose sum is σ = 216967930560. Its totient is φ = 108437906304.

The previous prime is 158172197971. The next prime is 158172197999. The reversal of 158172197995 is 599791271851.

158172197995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 158172197995 - 2⁹ = 158172197483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158172197999) 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, 311760 + ... + 643069.

It is an arithmetic number, because the mean of its divisors is an integer number (13560495660).

Almost surely, 2^158172197995 is an apocalyptic number.

158172197995 is a deficient number, since it is larger than the sum of its proper divisors (58795732565).

158172197995 is an equidigital number, since it uses as much as digits as its factorization.

158172197995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959574.

The product of its digits is 14288400, while the sum is 64.

The spelling of 158172197995 in words is "one hundred fifty-eight billion, one hundred seventy-two million, one hundred ninety-seven thousand, nine hundred ninety-five".