1143742913280 has 720 divisors, whose sum is σ = 4484027649024. Its totient is φ = 277203824640.

The previous prime is 1143742913267. The next prime is 1143742913281. The reversal of 1143742913280 is 823192473411.

1143742913280 is a `hidden beast` number, since 1 + 1 + 4 + 37 + 4 + 291 + 328 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1143742913281) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 277134577 + ... + 277138703.

Almost surely, 2^{1143742913280} is an apocalyptic number.

1143742913280 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 1143742913280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2242013824512).

1143742913280 is an abundant number, since it is smaller than the sum of its proper divisors (3340284735744).

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

1143742913280 is an frugal number, since it uses more digits than its factorization.

1143742913280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4186 (or 4148 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 1143742913280 in words is "one trillion, one hundred forty-three billion, seven hundred forty-two million, nine hundred thirteen thousand, two hundred eighty".