111533289156 has 27 divisors (see below), whose sum is σ = 281936435053. Its totient is φ = 37177095120.

The previous prime is 111533289151. The next prime is 111533289157. The reversal of 111533289156 is 651982335111.

The square root of 111533289156 is 333966.

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

111533289156 is a `hidden beast` number, since 1 + 1 + 1 + 533 + 28 + 91 + 5 + 6 = 666.

111533289156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 30718170756 + 80815118400 = 175266^2 + 284280^2 .

It is a super-3 number, since 3×111533289156³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111533289151) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1975966 + ... + 2031626.

Almost surely, 2^111533289156 is an apocalyptic number.

111533289156 is the 333966-th square number.

It is an amenable number.

111533289156 is an abundant number, since it is smaller than the sum of its proper divisors (170403145897).

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

111533289156 is an frugal number, since it uses more digits than its factorization.

111533289156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111332 (or 55666 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

It can be divided in two parts, 111533 and 289156, that added together give a square (400689 = 633²).

The spelling of 111533289156 in words is "one hundred eleven billion, five hundred thirty-three million, two hundred eighty-nine thousand, one hundred fifty-six".