158091360121 has 2 divisors, whose sum is σ = 158091360122. Its totient is φ = 158091360120.

The previous prime is 158091360041. The next prime is 158091360127. The reversal of 158091360121 is 121063190851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120453420096 + 37637940025 = 347064^2 + 194005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158091360121 is a prime.

It is not a weakly prime, because it can be changed into another prime (158091360127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79045680060 + 79045680061.

It is an arithmetic number, because the mean of its divisors is an integer number (79045680061).

Almost surely, 2^158091360121 is an apocalyptic number.

It is an amenable number.

158091360121 is a deficient number, since it is larger than the sum of its proper divisors (1).

158091360121 is an equidigital number, since it uses as much as digits as its factorization.

158091360121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 158091360121 in words is "one hundred fifty-eight billion, ninety-one million, three hundred sixty thousand, one hundred twenty-one".