1378825813530 has 48 divisors (see below), whose sum is σ = 3910851401184. Its totient is φ = 334260803040.

The previous prime is 1378825813523. The next prime is 1378825813571. The reversal of 1378825813530 is 353185288731.

1378825813530 is a `hidden beast` number, since 1 + 3 + 7 + 8 + 8 + 2 + 581 + 3 + 53 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 696375684 + ... + 696377663.

It is an arithmetic number, because the mean of its divisors is an integer number (81476070858).

Almost surely, 2^{1378825813530} is an apocalyptic number.

1378825813530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1378825813530 is an abundant number, since it is smaller than the sum of its proper divisors (2532025587654).

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

1378825813530 is a wasteful number, since it uses less digits than its factorization.

1378825813530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392753371 (or 1392753368 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 1378825813530 in words is "one trillion, three hundred seventy-eight billion, eight hundred twenty-five million, eight hundred thirteen thousand, five hundred thirty".