158438302081 has 4 divisors (see below), whose sum is σ = 158616925632. Its totient is φ = 158259678532.

The previous prime is 158438302063. The next prime is 158438302093. The reversal of 158438302081 is 180203834851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 158438302081 - 2¹⁹ = 158437777793 is a prime.

It is a super-2 number, since 2×158438302081² (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 (158438302031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89310445 + ... + 89312218.

It is an arithmetic number, because the mean of its divisors is an integer number (39654231408).

Almost surely, 2^158438302081 is an apocalyptic number.

It is an amenable number.

158438302081 is a deficient number, since it is larger than the sum of its proper divisors (178623551).

158438302081 is an equidigital number, since it uses as much as digits as its factorization.

158438302081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178623550.

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 158438302081 in words is "one hundred fifty-eight billion, four hundred thirty-eight million, three hundred two thousand, eighty-one".