111820789080 has 1152 divisors, whose sum is σ = 502876745280. Its totient is φ = 21180579840.

The previous prime is 111820789057. The next prime is 111820789103. The reversal of 111820789080 is 80987028111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111820789057) and next prime (111820789103).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 244684212 + ... + 244684668.

Almost surely, 2^111820789080 is an apocalyptic number.

111820789080 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 111820789080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251438372640).

111820789080 is an abundant number, since it is smaller than the sum of its proper divisors (391055956200).

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

111820789080 is a wasteful number, since it uses less digits than its factorization.

111820789080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 45.

The spelling of 111820789080 in words is "one hundred eleven billion, eight hundred twenty million, seven hundred eighty-nine thousand, eighty".