159801497461 has 4 divisors (see below), whose sum is σ = 159808476492. Its totient is φ = 159794518432.

The previous prime is 159801497431. The next prime is 159801497483. The reversal of 159801497461 is 164794108951.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39118906225 + 120682591236 = 197785^2 + 347394^2 .

It is a cyclic number.

It is not a de Polignac number, because 159801497461 - 2⁷ = 159801497333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159801497431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3455056 + ... + 3501001.

It is an arithmetic number, because the mean of its divisors is an integer number (39952119123).

Almost surely, 2^159801497461 is an apocalyptic number.

It is an amenable number.

159801497461 is a deficient number, since it is larger than the sum of its proper divisors (6979031).

159801497461 is an equidigital number, since it uses as much as digits as its factorization.

159801497461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6979030.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 159801497461 in words is "one hundred fifty-nine billion, eight hundred one million, four hundred ninety-seven thousand, four hundred sixty-one".