1244794894812 has 144 divisors (see below), whose sum is σ = 3690831336192. Its totient is φ = 346334123520.

The previous prime is 1244794894793. The next prime is 1244794894859. The reversal of 1244794894812 is 2184984974421.

1244794894812 is a `hidden beast` number, since 1 + 2 + 4 + 4 + 79 + 4 + 89 + 481 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 1244794894812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3413188 + ... + 3760244.

It is an arithmetic number, because the mean of its divisors is an integer number (25630773168).

Almost surely, 2^{1244794894812} is an apocalyptic number.

1244794894812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1244794894812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1845415668096).

1244794894812 is an abundant number, since it is smaller than the sum of its proper divisors (2446036441380).

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

1244794894812 is a wasteful number, since it uses less digits than its factorization.

1244794894812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347448 (or 347443 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 63.

The spelling of 1244794894812 in words is "one trillion, two hundred forty-four billion, seven hundred ninety-four million, eight hundred ninety-four thousand, eight hundred twelve".