111780444540118 has 4 divisors (see below), whose sum is σ = 167670666810180. Its totient is φ = 55890222270058.

The previous prime is 111780444540101. The next prime is 111780444540143. The reversal of 111780444540118 is 811045444087111.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×111780444540118² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27945111135028 + ... + 27945111135031.

It is an arithmetic number, because the mean of its divisors is an integer number (41917666702545).

Almost surely, 2^{111780444540118} is an apocalyptic number.

111780444540118 is a deficient number, since it is larger than the sum of its proper divisors (55890222270062).

111780444540118 is an equidigital number, since it uses as much as digits as its factorization.

111780444540118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55890222270061.

The product of its (nonzero) digits is 573440, while the sum is 49.

The spelling of 111780444540118 in words is "one hundred eleven trillion, seven hundred eighty billion, four hundred forty-four million, five hundred forty thousand, one hundred eighteen".