1388365388340 has 96 divisors (see below), whose sum is σ = 4443278810880. Its totient is φ = 317304262656.

The previous prime is 1388365388323. The next prime is 1388365388341. The reversal of 1388365388340 is 438835638831.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388365388341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3565074 + ... + 3935286.

It is an arithmetic number, because the mean of its divisors is an integer number (46284154280).

Almost surely, 2^{1388365388340} is an apocalyptic number.

1388365388340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1388365388340 is an abundant number, since it is smaller than the sum of its proper divisors (3054913422540).

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

1388365388340 is a wasteful number, since it uses less digits than its factorization.

1388365388340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379161 (or 379159 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 60.

The spelling of 1388365388340 in words is "one trillion, three hundred eighty-eight billion, three hundred sixty-five million, three hundred eighty-eight thousand, three hundred forty".