158173133905 has 32 divisors (see below), whose sum is σ = 197719464096. Its totient is φ = 121371623424.

The previous prime is 158173133903. The next prime is 158173133927. The reversal of 158173133905 is 509331371851.

It can be written as a sum of positive squares in 16 ways, for example, as 18365941441 + 139807192464 = 135521^2 + 373908^2 .

It is a cyclic number.

It is not a de Polignac number, because 158173133905 - 2¹ = 158173133903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158173133903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4594717 + ... + 4629013.

It is an arithmetic number, because the mean of its divisors is an integer number (6178733253).

Almost surely, 2^158173133905 is an apocalyptic number.

It is an amenable number.

158173133905 is a deficient number, since it is larger than the sum of its proper divisors (39546330191).

158173133905 is a wasteful number, since it uses less digits than its factorization.

158173133905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34693.

The product of its (nonzero) digits is 340200, while the sum is 46.

The spelling of 158173133905 in words is "one hundred fifty-eight billion, one hundred seventy-three million, one hundred thirty-three thousand, nine hundred five".