111404001440 has 24 divisors (see below), whose sum is σ = 263191953780. Its totient is φ = 44561600512.

The previous prime is 111404001427. The next prime is 111404001461. The reversal of 111404001440 is 44100404111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 109791497104 + 1612504336 = 331348^2 + 40156^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348137345 + ... + 348137664.

Almost surely, 2^111404001440 is an apocalyptic number.

111404001440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111404001440 is an abundant number, since it is smaller than the sum of its proper divisors (151787952340).

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

111404001440 is an equidigital number, since it uses as much as digits as its factorization.

111404001440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696275024 (or 696275016 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 111404001440 its reverse (44100404111), we get a palindrome (155504405551).

The spelling of 111404001440 in words is "one hundred eleven billion, four hundred four million, one thousand, four hundred forty".