1378749769800 has 384 divisors, whose sum is σ = 4726857461760. Its totient is φ = 330346598400.

The previous prime is 1378749769777. The next prime is 1378749769801. The reversal of 1378749769800 is 89679478731.

It is not an unprimeable number, because it can be changed into a prime (1378749769801) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 52488670 + ... + 52514930.

It is an arithmetic number, because the mean of its divisors is an integer number (12309524640).

Almost surely, 2^{1378749769800} is an apocalyptic number.

1378749769800 is a gapful number since it is divisible by the number (10) 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 1378749769800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2363428730880).

1378749769800 is an abundant number, since it is smaller than the sum of its proper divisors (3348107691960).

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

1378749769800 is a wasteful number, since it uses less digits than its factorization.

1378749769800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26473 (or 26464 counting only the distinct ones).

The product of its (nonzero) digits is 128024064, while the sum is 69.

The spelling of 1378749769800 in words is "one trillion, three hundred seventy-eight billion, seven hundred forty-nine million, seven hundred sixty-nine thousand, eight hundred".