1143942639840 has 5184 divisors, whose sum is σ = 6200159696640. Its totient is φ = 195641671680.

The previous prime is 1143942639817. The next prime is 1143942639893. The reversal of 1143942639840 is 489362493411.

1143942639840 is a `hidden beast` number, since 1 + 143 + 9 + 426 + 39 + 8 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 863 ways as a sum of consecutive naturals, for example, 60207507351 + ... + 60207507369.

It is an arithmetic number, because the mean of its divisors is an integer number (1196018460).

Almost surely, 2^{1143942639840} is an apocalyptic number.

1143942639840 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 1143942639840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3100079848320).

1143942639840 is an abundant number, since it is smaller than the sum of its proper divisors (5056217056800).

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

1143942639840 is a wasteful number, since it uses less digits than its factorization.

1143942639840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 1143942639840 in words is "one trillion, one hundred forty-three billion, nine hundred forty-two million, six hundred thirty-nine thousand, eight hundred forty".