1381512128200 has 72 divisors (see below), whose sum is σ = 3267381016530. Its totient is φ = 543238393600.

The previous prime is 1381512128189. The next prime is 1381512128231. The reversal of 1381512128200 is 28212151831.

It can be written as a sum of positive squares in 3 ways, for example, as 739369537956 + 642142590244 = 859866^2 + 801338^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 295981 + ... + 1688380.

Almost surely, 2^{1381512128200} is an apocalyptic number.

1381512128200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1381512128200 is an abundant number, since it is smaller than the sum of its proper divisors (1885868888330).

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

1381512128200 is a wasteful number, since it uses less digits than its factorization.

1381512128200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984495 (or 1984427 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 34.

The spelling of 1381512128200 in words is "one trillion, three hundred eighty-one billion, five hundred twelve million, one hundred twenty-eight thousand, two hundred".