158513684661 has 12 divisors (see below), whose sum is σ = 229003433100. Its totient is φ = 105657687360.

The previous prime is 158513684627. The next prime is 158513684687. The reversal of 158513684661 is 166486315851.

158513684661 is a `hidden beast` number, since 1 + 5 + 8 + 513 + 68 + 4 + 6 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 75353544036 + 83160140625 = 274506^2 + 288375^2 .

It is not a de Polignac number, because 158513684661 - 2¹⁰ = 158513683637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 158513684598 and 158513684607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158513684611) 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 11 ways as a sum of consecutive naturals, for example, 1452970 + ... + 1558251.

It is an arithmetic number, because the mean of its divisors is an integer number (19083619425).

Almost surely, 2^158513684661 is an apocalyptic number.

It is an amenable number.

158513684661 is a deficient number, since it is larger than the sum of its proper divisors (70489748439).

158513684661 is a wasteful number, since it uses less digits than its factorization.

158513684661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017076 (or 3017073 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The spelling of 158513684661 in words is "one hundred fifty-eight billion, five hundred thirteen million, six hundred eighty-four thousand, six hundred sixty-one".