1388353063280 has 20 divisors (see below), whose sum is σ = 3227920872312. Its totient is φ = 555341225280.

The previous prime is 1388353063277. The next prime is 1388353063289. The reversal of 1388353063280 is 823603538831.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388353063289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8677206566 + ... + 8677206725.

Almost surely, 2^{1388353063280} is an apocalyptic number.

1388353063280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1388353063280 is an abundant number, since it is smaller than the sum of its proper divisors (1839567809032).

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

1388353063280 is a wasteful number, since it uses less digits than its factorization.

1388353063280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17354413304 (or 17354413298 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 1388353063280 in words is "one trillion, three hundred eighty-eight billion, three hundred fifty-three million, sixty-three thousand, two hundred eighty".