1378979798016 has 132 divisors (see below), whose sum is σ = 3842240075912. Its totient is φ = 439674200064.

The previous prime is 1378979797997. The next prime is 1378979798059. The reversal of 1378979798016 is 6108979798731.

It is a happy number.

It is a congruent number.

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, 1200810 + ... + 2049366.

Almost surely, 2^{1378979798016} is an apocalyptic number.

1378979798016 is a gapful number since it is divisible by the number (16) 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 1378979798016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1921120037956).

1378979798016 is an abundant number, since it is smaller than the sum of its proper divisors (2463260277896).

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

1378979798016 is an equidigital number, since it uses as much as digits as its factorization.

1378979798016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848626 (or 848585 counting only the distinct ones).

The product of its (nonzero) digits is 288054144, while the sum is 75.

The spelling of 1378979798016 in words is "one trillion, three hundred seventy-eight billion, nine hundred seventy-nine million, seven hundred ninety-eight thousand, sixteen".