1244837849664 has 224 divisors, whose sum is σ = 3473242914816. Its totient is φ = 392717445120.

The previous prime is 1244837849617. The next prime is 1244837849707. The reversal of 1244837849664 is 4669487384421.

It is a junction number, because it is equal to n+sod(n) for n = 1244837849595 and 1244837849604.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222647509 + ... + 222653099.

Almost surely, 2^{1244837849664} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1244837849664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1736621457408).

1244837849664 is an abundant number, since it is smaller than the sum of its proper divisors (2228405065152).

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

1244837849664 is a wasteful number, since it uses less digits than its factorization.

1244837849664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6153 (or 6143 counting only the distinct ones).

The product of its digits is 222953472, while the sum is 66.

The spelling of 1244837849664 in words is "one trillion, two hundred forty-four billion, eight hundred thirty-seven million, eight hundred forty-nine thousand, six hundred sixty-four".