1143388722868 has 72 divisors (see below), whose sum is σ = 2335033532832. Its totient is φ = 488462861376.

The previous prime is 1143388722851. The next prime is 1143388722869. The reversal of 1143388722868 is 8682278833411.

It is a super-2 number, since 2×1143388722868² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143388722869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 285630955 + ... + 285634957.

Almost surely, 2^{1143388722868} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143388722868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1167516766416).

1143388722868 is an abundant number, since it is smaller than the sum of its proper divisors (1191644809964).

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

1143388722868 is a wasteful number, since it uses less digits than its factorization.

1143388722868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8301 (or 8292 counting only the distinct ones).

The product of its digits is 24772608, while the sum is 61.

The spelling of 1143388722868 in words is "one trillion, one hundred forty-three billion, three hundred eighty-eight million, seven hundred twenty-two thousand, eight hundred sixty-eight".