1281313043800 has 24 divisors (see below), whose sum is σ = 2979052827300. Its totient is φ = 512525217440.

The previous prime is 1281313043741. The next prime is 1281313043849. The reversal of 1281313043800 is 83403131821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3203282410 + ... + 3203282809.

Almost surely, 2^{1281313043800} is an apocalyptic number.

1281313043800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1281313043800 is an abundant number, since it is smaller than the sum of its proper divisors (1697739783500).

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

1281313043800 is a wasteful number, since it uses less digits than its factorization.

1281313043800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6406565235 (or 6406565226 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 1281313043800 in words is "one trillion, two hundred eighty-one billion, three hundred thirteen million, forty-three thousand, eight hundred".