1121555241440 has 48 divisors (see below), whose sum is σ = 2651621631120. Its totient is φ = 448292382720.

The previous prime is 1121555241437. The next prime is 1121555241467. The reversal of 1121555241440 is 441425551211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121555241440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2357450 + ... + 2792969.

It is an arithmetic number, because the mean of its divisors is an integer number (55242117315).

Almost surely, 2^{1121555241440} is an apocalyptic number.

1121555241440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121555241440 is an abundant number, since it is smaller than the sum of its proper divisors (1530066389680).

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

1121555241440 is a wasteful number, since it uses less digits than its factorization.

1121555241440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5151795 (or 5151787 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 35.

The spelling of 1121555241440 in words is "one trillion, one hundred twenty-one billion, five hundred fifty-five million, two hundred forty-one thousand, four hundred forty".