1111153827840 has 224 divisors, whose sum is σ = 4063403404800. Its totient is φ = 253977821184.

The previous prime is 1111153827779. The next prime is 1111153827857. The reversal of 1111153827840 is 487283511111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1111153827792 and 1111153827801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214261 + ... + 1506059.

Almost surely, 2^{1111153827840} is an apocalyptic number.

1111153827840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111153827840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2031701702400).

1111153827840 is an abundant number, since it is smaller than the sum of its proper divisors (2952249576960).

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

1111153827840 is an equidigital number, since it uses as much as digits as its factorization.

1111153827840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291840 (or 1291816 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 42.

The spelling of 1111153827840 in words is "one trillion, one hundred eleven billion, one hundred fifty-three million, eight hundred twenty-seven thousand, eight hundred forty".