1247844799488 has 704 divisors, whose sum is σ = 4188063744000. Its totient is φ = 322114682880.

The previous prime is 1247844799417. The next prime is 1247844799507. The reversal of 1247844799488 is 8849974487421.

It is a Smith number, since the sum of its digits (75) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1688558223 + ... + 1688558961.

Almost surely, 2^{1247844799488} 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 1247844799488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2094031872000).

1247844799488 is an abundant number, since it is smaller than the sum of its proper divisors (2940218944512).

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

1247844799488 is a wasteful number, since it uses less digits than its factorization.

1247844799488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966 (or 948 counting only the distinct ones).

The product of its digits is 1040449536, while the sum is 75.

The spelling of 1247844799488 in words is "one trillion, two hundred forty-seven billion, eight hundred forty-four million, seven hundred ninety-nine thousand, four hundred eighty-eight".