111134123440 has 40 divisors (see below), whose sum is σ = 258894568080. Its totient is φ = 44366297856.

The previous prime is 111134123411. The next prime is 111134123447. The reversal of 111134123440 is 44321431111.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (111134123447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1323894 + ... + 1405333.

It is an arithmetic number, because the mean of its divisors is an integer number (6472364202).

Almost surely, 2^111134123440 is an apocalyptic number.

111134123440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111134123440 is an abundant number, since it is smaller than the sum of its proper divisors (147760444640).

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

111134123440 is a wasteful number, since it uses less digits than its factorization.

111134123440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729749 (or 2729743 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 111134123440 its reverse (44321431111), we get a palindrome (155455554551).

The spelling of 111134123440 in words is "one hundred eleven billion, one hundred thirty-four million, one hundred twenty-three thousand, four hundred forty".