1388206328100 has 72 divisors (see below), whose sum is σ = 4016676874560. Its totient is φ = 370176074880.

The previous prime is 1388206328099. The next prime is 1388206328191. The reversal of 1388206328100 is 18236028831.

It is a super-2 number, since 2×1388206328100² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12307761 + ... + 12420039.

Almost surely, 2^{1388206328100} is an apocalyptic number.

1388206328100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1388206328100 is an abundant number, since it is smaller than the sum of its proper divisors (2628470546460).

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

1388206328100 is a wasteful number, since it uses less digits than its factorization.

1388206328100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153509 (or 153502 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 1388206328100 in words is "one trillion, three hundred eighty-eight billion, two hundred six million, three hundred twenty-eight thousand, one hundred".