1125543854640 has 160 divisors (see below), whose sum is σ = 3572390638080. Its totient is φ = 292995698688.

The previous prime is 1125543854627. The next prime is 1125543854641. The reversal of 1125543854640 is 464583455211.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1125543854640.

It is not an unprimeable number, because it can be changed into a prime (1125543854641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18369976 + ... + 18431144.

It is an arithmetic number, because the mean of its divisors is an integer number (22327441488).

Almost surely, 2^{1125543854640} is an apocalyptic number.

1125543854640 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 1125543854640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1786195319040).

1125543854640 is an abundant number, since it is smaller than the sum of its proper divisors (2446846783440).

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

1125543854640 is a wasteful number, since it uses less digits than its factorization.

1125543854640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63011 (or 63005 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 48.

The spelling of 1125543854640 in words is "one trillion, one hundred twenty-five billion, five hundred forty-three million, eight hundred fifty-four thousand, six hundred forty".