159545328767977 has 2 divisors, whose sum is σ = 159545328767978. Its totient is φ = 159545328767976.

The previous prime is 159545328767959. The next prime is 159545328767999. The reversal of 159545328767977 is 779767823545951.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90851798887641 + 68693529880336 = 9531621^2 + 8288156^2 .

It is a cyclic number.

It is not a de Polignac number, because 159545328767977 - 2⁷ = 159545328767849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 159545328767894 and 159545328767903.

It is not a weakly prime, because it can be changed into another prime (159545328764977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79772664383988 + 79772664383989.

It is an arithmetic number, because the mean of its divisors is an integer number (79772664383989).

Almost surely, 2^{159545328767977} is an apocalyptic number.

It is an amenable number.

159545328767977 is a deficient number, since it is larger than the sum of its proper divisors (1).

159545328767977 is an equidigital number, since it uses as much as digits as its factorization.

159545328767977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28005264000, while the sum is 85.

The spelling of 159545328767977 in words is "one hundred fifty-nine trillion, five hundred forty-five billion, three hundred twenty-eight million, seven hundred sixty-seven thousand, nine hundred seventy-seven".