111153534023440 has 40 divisors (see below), whose sum is σ = 258857719545600. Its totient is φ = 44388165791616.

The previous prime is 111153534023429. The next prime is 111153534023449. The reversal of 111153534023440 is 44320435351111.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 111153534023440.

It is not an unprimeable number, because it can be changed into a prime (111153534023449) 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, 1144448290 + ... + 1144545409.

It is an arithmetic number, because the mean of its divisors is an integer number (6471442988640).

Almost surely, 2^{111153534023440} is an apocalyptic number.

111153534023440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111153534023440 is an abundant number, since it is smaller than the sum of its proper divisors (147704185522160).

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

111153534023440 is a wasteful number, since it uses less digits than its factorization.

111153534023440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288994319 (or 2288994313 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 111153534023440 its reverse (44320435351111), we get a palindrome (155473969374551).

The spelling of 111153534023440 in words is "one hundred eleven trillion, one hundred fifty-three billion, five hundred thirty-four million, twenty-three thousand, four hundred forty".