111720576380 has 96 divisors (see below), whose sum is σ = 273998592000. Its totient is φ = 37466721792.

The previous prime is 111720576361. The next prime is 111720576389. The reversal of 111720576380 is 83675027111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111720576389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13807376 + ... + 13815464.

It is an arithmetic number, because the mean of its divisors is an integer number (2854152000).

Almost surely, 2^111720576380 is an apocalyptic number.

111720576380 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 111720576380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136999296000).

111720576380 is an abundant number, since it is smaller than the sum of its proper divisors (162278015620).

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

111720576380 is a wasteful number, since it uses less digits than its factorization.

111720576380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10251 (or 10249 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 111720576380 in words is "one hundred eleven billion, seven hundred twenty million, five hundred seventy-six thousand, three hundred eighty".