158621066828 has 24 divisors (see below), whose sum is σ = 324979749024. Its totient is φ = 66322396800.

The previous prime is 158621066809. The next prime is 158621066833. The reversal of 158621066828 is 828660126851.

158621066828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 158621066828.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69084683 + ... + 69086978.

It is an arithmetic number, because the mean of its divisors is an integer number (13540822876).

Almost surely, 2^158621066828 is an apocalyptic number.

It is an amenable number.

158621066828 is an abundant number, since it is smaller than the sum of its proper divisors (166358682196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158621066828 is a wasteful number, since it uses less digits than its factorization.

158621066828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138171713 (or 138171711 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 53.

The spelling of 158621066828 in words is "one hundred fifty-eight billion, six hundred twenty-one million, sixty-six thousand, eight hundred twenty-eight".