1328139567378 has 24 divisors (see below), whose sum is σ = 3098992324428. Its totient is φ = 408658328352.

The previous prime is 1328139567311. The next prime is 1328139567437. The reversal of 1328139567378 is 8737659318231.

1328139567378 is a `hidden beast` number, since 1 + 3 + 2 + 8 + 1 + 39 + 567 + 37 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1242585072369 + 85554495009 = 1114713^2 + 292497^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2837904825 + ... + 2837905292.

Almost surely, 2^{1328139567378} is an apocalyptic number.

1328139567378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1328139567378 is an abundant number, since it is smaller than the sum of its proper divisors (1770852757050).

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

1328139567378 is a wasteful number, since it uses less digits than its factorization.

1328139567378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5675810138 (or 5675810135 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The spelling of 1328139567378 in words is "one trillion, three hundred twenty-eight billion, one hundred thirty-nine million, five hundred sixty-seven thousand, three hundred seventy-eight".