1381791244800 has 120 divisors (see below), whose sum is σ = 4564661142096. Its totient is φ = 368477655040.

The previous prime is 1381791244789. The next prime is 1381791244871. The reversal of 1381791244800 is 84421971831.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1381791244800.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17953674 + ... + 18030473.

Almost surely, 2^{1381791244800} is an apocalyptic number.

1381791244800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1381791244800 is an abundant number, since it is smaller than the sum of its proper divisors (3182869897296).

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

1381791244800 is an equidigital number, since it uses as much as digits as its factorization.

1381791244800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35984178 (or 35984157 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 1381791244800 in words is "one trillion, three hundred eighty-one billion, seven hundred ninety-one million, two hundred forty-four thousand, eight hundred".