1388795129280 has 560 divisors, whose sum is σ = 5491863869184. Its totient is φ = 330827120640.

The previous prime is 1388795129269. The next prime is 1388795129339. The reversal of 1388795129280 is 829215978831.

1388795129280 is a `hidden beast` number, since 1 + 38 + 8 + 7 + 9 + 512 + 9 + 2 + 80 = 666.

It is a super-2 number, since 2×1388795129280² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 10379284 + ... + 10512236.

Almost surely, 2^{1388795129280} is an apocalyptic number.

1388795129280 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 1388795129280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2745931934592).

1388795129280 is an abundant number, since it is smaller than the sum of its proper divisors (4103068739904).

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

1388795129280 is a wasteful number, since it uses less digits than its factorization.

1388795129280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133026 (or 133007 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 63.

The spelling of 1388795129280 in words is "one trillion, three hundred eighty-eight billion, seven hundred ninety-five million, one hundred twenty-nine thousand, two hundred eighty".