158367685121 has 4 divisors (see below), whose sum is σ = 165253236672. Its totient is φ = 151482133572.

The previous prime is 158367685081. The next prime is 158367685129. The reversal of 158367685121 is 121586763851.

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 158367685121 - 2¹⁴ = 158367668737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158367685129) 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, 3442775741 + ... + 3442775786.

It is an arithmetic number, because the mean of its divisors is an integer number (41313309168).

Almost surely, 2^158367685121 is an apocalyptic number.

It is an amenable number.

158367685121 is a deficient number, since it is larger than the sum of its proper divisors (6885551551).

158367685121 is an equidigital number, since it uses as much as digits as its factorization.

158367685121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6885551550.

The product of its digits is 2419200, while the sum is 53.

The spelling of 158367685121 in words is "one hundred fifty-eight billion, three hundred sixty-seven million, six hundred eighty-five thousand, one hundred twenty-one".