111506543228940 has 192 divisors, whose sum is σ = 319672738667520. Its totient is φ = 29032162698240.

The previous prime is 111506543228903. The next prime is 111506543228987. The reversal of 111506543228940 is 49822345605111.

It is a super-2 number, since 2×111506543228940² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1301038129 + ... + 1301123831.

It is an arithmetic number, because the mean of its divisors is an integer number (1664962180560).

Almost surely, 2^{111506543228940} is an apocalyptic number.

111506543228940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111506543228940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159836369333760).

111506543228940 is an abundant number, since it is smaller than the sum of its proper divisors (208166195438580).

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

111506543228940 is a wasteful number, since it uses less digits than its factorization.

111506543228940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88272 (or 88270 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 111506543228940 in words is "one hundred eleven trillion, five hundred six billion, five hundred forty-three million, two hundred twenty-eight thousand, nine hundred forty".