158158160722 has 4 divisors (see below), whose sum is σ = 237237241086.
Its totient is φ = 79079080360.
The previous prime is 158158160717. The next prime is 158158160777. The reversal of 158158160722 is 227061851851.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 227061851851 = 50227 ⋅4520713.
It can be written as a sum of positive squares in only one way, i.e., 158158131481 + 29241 = 397691^2 + 171^2
It is a super-2 number, since 2×1581581607222 (a number of 23 digits) contains 22 as substring.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39539540179 + ... + 39539540182.
Almost surely, 2158158160722 is an apocalyptic number.
158158160722 is a deficient number, since it is larger than the sum of its proper divisors (79079080364).
158158160722 is an equidigital number, since it uses as much as digits as its factorization.
158158160722 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 79079080363.
The product of its (nonzero) digits is 268800, while the sum is 46.
The spelling of 158158160722 in words is "one hundred fifty-eight billion, one hundred fifty-eight million, one hundred sixty thousand, seven hundred twenty-two".