111720459493728 has 96 divisors (see below), whose sum is σ = 340018789824000. Its totient is φ = 35621016064128.

The previous prime is 111720459493723. The next prime is 111720459493729. The reversal of 111720459493728 is 827394954027111.

111720459493728 is a `hidden beast` number, since 1 + 1 + 1 + 7 + 2 + 0 + 4 + 594 + 9 + 37 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×111720459493728² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111720459493723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2810982028 + ... + 2811021771.

It is an arithmetic number, because the mean of its divisors is an integer number (3541862394000).

Almost surely, 2^{111720459493728} is an apocalyptic number.

111720459493728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

111720459493728 is an abundant number, since it is smaller than the sum of its proper divisors (228298330330272).

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

111720459493728 is a wasteful number, since it uses less digits than its factorization.

111720459493728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5622003841 (or 5622003827 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 111720459493728 in words is "one hundred eleven trillion, seven hundred twenty billion, four hundred fifty-nine million, four hundred ninety-three thousand, seven hundred twenty-eight".