158117011 has 4 divisors (see below), whose sum is σ = 170279872. Its totient is φ = 145954152.

The previous prime is 158116979. The next prime is 158117027. The reversal of 158117011 is 110711851.

158117011 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 a cyclic number.

It is not a de Polignac number, because 158117011 - 2⁵ = 158116979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158112011) 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, 6081411 + ... + 6081436.

It is an arithmetic number, because the mean of its divisors is an integer number (42569968).

Almost surely, 2^158117011 is an apocalyptic number.

158117011 is a deficient number, since it is larger than the sum of its proper divisors (12162861).

158117011 is a wasteful number, since it uses less digits than its factorization.

158117011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12162860.

The product of its (nonzero) digits is 280, while the sum is 25.

The square root of 158117011 is about 12574.4586762214. The cubic root of 158117011 is about 540.7454393968.

Adding to 158117011 its reverse (110711851), we get a palindrome (268828862).

It can be divided in two parts, 15811 and 7011, that added together give a palindrome (22822).

The spelling of 158117011 in words is "one hundred fifty-eight million, one hundred seventeen thousand, eleven".