1143321811860 has 48 divisors (see below), whose sum is σ = 3201347620800. Its totient is φ = 304881383424.

The previous prime is 1143321811843. The next prime is 1143321811861. The reversal of 1143321811860 is 681181233411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143321811861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7536436 + ... + 7686644.

It is an arithmetic number, because the mean of its divisors is an integer number (66694742100).

Almost surely, 2^{1143321811860} is an apocalyptic number.

1143321811860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143321811860 is an abundant number, since it is smaller than the sum of its proper divisors (2058025808940).

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

1143321811860 is a wasteful number, since it uses less digits than its factorization.

1143321811860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277080 (or 277078 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The spelling of 1143321811860 in words is "one trillion, one hundred forty-three billion, three hundred twenty-one million, eight hundred eleven thousand, eight hundred sixty".