159867227556 has 135 divisors (see below), whose sum is σ = 424129487859. Its totient is φ = 52509399552.

The previous prime is 159867227549. The next prime is 159867227587. The reversal of 159867227556 is 655722768951.

The square root of 159867227556 is 399834.

It is a perfect power (a square), and thus also a powerful number.

159867227556 is a `hidden beast` number, since 1 + 5 + 9 + 8 + 6 + 72 + 2 + 7 + 556 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 32692256100 + 127174971456 = 180810^2 + 356616^2 .

It is a junction number, because it is equal to n+sod(n) for n = 159867227493 and 159867227502.

It is an unprimeable number.

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 44 ways as a sum of consecutive naturals, for example, 698110050 + ... + 698110278.

Almost surely, 2^159867227556 is an apocalyptic number.

159867227556 is the 399834-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159867227556

159867227556 is an abundant number, since it is smaller than the sum of its proper divisors (264262260303).

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

159867227556 is an frugal number, since it uses more digits than its factorization.

159867227556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 331 counting only the distinct ones).

The product of its digits is 63504000, while the sum is 63.

The spelling of 159867227556 in words is "one hundred fifty-nine billion, eight hundred sixty-seven million, two hundred twenty-seven thousand, five hundred fifty-six".