158189228077 has 2 divisors, whose sum is σ = 158189228078. Its totient is φ = 158189228076.

The previous prime is 158189228039. The next prime is 158189228203. The reversal of 158189228077 is 770822981851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100771962916 + 57417265161 = 317446^2 + 239619^2 .

It is a cyclic number.

It is not a de Polignac number, because 158189228077 - 2²⁷ = 158055010349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158189228027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79094614038 + 79094614039.

It is an arithmetic number, because the mean of its divisors is an integer number (79094614039).

Almost surely, 2^158189228077 is an apocalyptic number.

It is an amenable number.

158189228077 is a deficient number, since it is larger than the sum of its proper divisors (1).

158189228077 is an equidigital number, since it uses as much as digits as its factorization.

158189228077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4515840, while the sum is 58.

The spelling of 158189228077 in words is "one hundred fifty-eight billion, one hundred eighty-nine million, two hundred twenty-eight thousand, seventy-seven".