111492509856 has 576 divisors, whose sum is σ = 382809563136. Its totient is φ = 28130457600.

The previous prime is 111492509839. The next prime is 111492509857. The reversal of 111492509856 is 658905294111.

It is a junction number, because it is equal to n+sod(n) for n = 111492509799 and 111492509808.

It is not an unprimeable number, because it can be changed into a prime (111492509857) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 195258051 + ... + 195258621.

It is an arithmetic number, because the mean of its divisors is an integer number (664599936).

Almost surely, 2^111492509856 is an apocalyptic number.

111492509856 is a gapful number since it is divisible by the number (16) 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 111492509856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191404781568).

111492509856 is an abundant number, since it is smaller than the sum of its proper divisors (271317053280).

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

111492509856 is a wasteful number, since it uses less digits than its factorization.

111492509856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 51.

The spelling of 111492509856 in words is "one hundred eleven billion, four hundred ninety-two million, five hundred nine thousand, eight hundred fifty-six".