158733085661 has 16 divisors (see below), whose sum is σ = 175591183104. Its totient is φ = 142726450944.

The previous prime is 158733085649. The next prime is 158733085681. The reversal of 158733085661 is 166580337851.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 158733085661 - 2²⁶ = 158665976797 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 (158733085681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75155 + ... + 568431.

It is an arithmetic number, because the mean of its divisors is an integer number (10974448944).

Almost surely, 2^158733085661 is an apocalyptic number.

It is an amenable number.

158733085661 is a deficient number, since it is larger than the sum of its proper divisors (16858097443).

158733085661 is a wasteful number, since it uses less digits than its factorization.

158733085661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494140.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 158733085661 in words is "one hundred fifty-eight billion, seven hundred thirty-three million, eighty-five thousand, six hundred sixty-one".