1131126455544 has 128 divisors (see below), whose sum is σ = 3022427865600. Its totient is φ = 352121495040.

The previous prime is 1131126455519. The next prime is 1131126455581. The reversal of 1131126455544 is 4455546211311.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1131126455496 and 1131126455505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2899114 + ... + 3266054.

It is an arithmetic number, because the mean of its divisors is an integer number (23612717700).

Almost surely, 2^{1131126455544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131126455544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1511213932800).

1131126455544 is an abundant number, since it is smaller than the sum of its proper divisors (1891301410056).

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

1131126455544 is a wasteful number, since it uses less digits than its factorization.

1131126455544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367125 (or 367121 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

It can be divided in two parts, 113112 and 6455544, that added together give a palindrome (6568656).

The spelling of 1131126455544 in words is "one trillion, one hundred thirty-one billion, one hundred twenty-six million, four hundred fifty-five thousand, five hundred forty-four".