159440499149 has 2 divisors, whose sum is σ = 159440499150. Its totient is φ = 159440499148.

The previous prime is 159440499139. The next prime is 159440499167. The reversal of 159440499149 is 941994044951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155149332100 + 4291167049 = 393890^2 + 65507^2 .

It is a cyclic number.

It is not a de Polignac number, because 159440499149 - 2¹⁶ = 159440433613 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159440499139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79720249574 + 79720249575.

It is an arithmetic number, because the mean of its divisors is an integer number (79720249575).

Almost surely, 2^159440499149 is an apocalyptic number.

It is an amenable number.

159440499149 is a deficient number, since it is larger than the sum of its proper divisors (1).

159440499149 is an equidigital number, since it uses as much as digits as its factorization.

159440499149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8398080, while the sum is 59.

The spelling of 159440499149 in words is "one hundred fifty-nine billion, four hundred forty million, four hundred ninety-nine thousand, one hundred forty-nine".