111909327550 has 12 divisors (see below), whose sum is σ = 208151349336. Its totient is φ = 44763731000.

The previous prime is 111909327539. The next prime is 111909327553. The reversal of 111909327550 is 55723909111.

It is a junction number, because it is equal to n+sod(n) for n = 111909327497 and 111909327506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111909327553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1119093226 + ... + 1119093325.

It is an arithmetic number, because the mean of its divisors is an integer number (17345945778).

Almost surely, 2^111909327550 is an apocalyptic number.

111909327550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111909327550 is a deficient number, since it is larger than the sum of its proper divisors (96242021786).

111909327550 is a wasteful number, since it uses less digits than its factorization.

111909327550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238186563 (or 2238186558 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 43.

The spelling of 111909327550 in words is "one hundred eleven billion, nine hundred nine million, three hundred twenty-seven thousand, five hundred fifty".