159671509261 has 16 divisors (see below), whose sum is σ = 174563951040. Its totient is φ = 144842181120.

The previous prime is 159671509237. The next prime is 159671509297. The reversal of 159671509261 is 162905176951.

It is a cyclic number.

It is not a de Polignac number, because 159671509261 - 2⁵ = 159671509229 is a prime.

It is a super-2 number, since 2×159671509261² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 159671509199 and 159671509208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159671504261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12349146 + ... + 12362068.

It is an arithmetic number, because the mean of its divisors is an integer number (10910246940).

Almost surely, 2^159671509261 is an apocalyptic number.

159671509261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

159671509261 is a deficient number, since it is larger than the sum of its proper divisors (14892441779).

159671509261 is a wasteful number, since it uses less digits than its factorization.

159671509261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15276.

The product of its (nonzero) digits is 1020600, while the sum is 52.

The spelling of 159671509261 in words is "one hundred fifty-nine billion, six hundred seventy-one million, five hundred nine thousand, two hundred sixty-one".