1389129255360 has 1792 divisors, whose sum is σ = 6385876992000. Its totient is φ = 281652940800.

The previous prime is 1389129255301. The next prime is 1389129255379. The reversal of 1389129255360 is 635529219831.

1389129255360 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 1 + 29 + 2 + 553 + 60 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1389129255297 and 1389129255306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1401744465 + ... + 1401745455.

Almost surely, 2^{1389129255360} is an apocalyptic number.

1389129255360 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 1389129255360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3192938496000).

1389129255360 is an abundant number, since it is smaller than the sum of its proper divisors (4996747736640).

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

1389129255360 is a wasteful number, since it uses less digits than its factorization.

1389129255360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092 (or 1062 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 54.

The spelling of 1389129255360 in words is "one trillion, three hundred eighty-nine billion, one hundred twenty-nine million, two hundred fifty-five thousand, three hundred sixty".