159691037249 has 2 divisors, whose sum is σ = 159691037250. Its totient is φ = 159691037248.

The previous prime is 159691037203. The next prime is 159691037251. The reversal of 159691037249 is 942730196951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114645219649 + 45045817600 = 338593^2 + 212240^2 .

It is a cyclic number.

It is not a de Polignac number, because 159691037249 - 2⁸ = 159691036993 is a prime.

It is a Sophie Germain prime.

Together with 159691037251, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 159691037194 and 159691037203.

It is not a weakly prime, because it can be changed into another prime (159691037749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79845518624 + 79845518625.

It is an arithmetic number, because the mean of its divisors is an integer number (79845518625).

Almost surely, 2^159691037249 is an apocalyptic number.

It is an amenable number.

159691037249 is a deficient number, since it is larger than the sum of its proper divisors (1).

159691037249 is an equidigital number, since it uses as much as digits as its factorization.

159691037249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3674160, while the sum is 56.

The spelling of 159691037249 in words is "one hundred fifty-nine billion, six hundred ninety-one million, thirty-seven thousand, two hundred forty-nine".