1380640128428 has 24 divisors (see below), whose sum is σ = 2638448951040. Its totient is φ = 626925258320.

The previous prime is 1380640128403. The next prime is 1380640128457. The reversal of 1380640128428 is 8248210460831.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15917168 + ... + 16003671.

It is an arithmetic number, because the mean of its divisors is an integer number (109935372960).

Almost surely, 2^{1380640128428} is an apocalyptic number.

It is an amenable number.

1380640128428 is a deficient number, since it is larger than the sum of its proper divisors (1257808822612).

1380640128428 is a wasteful number, since it uses less digits than its factorization.

1380640128428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31921837 (or 31921835 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 47.

The spelling of 1380640128428 in words is "one trillion, three hundred eighty billion, six hundred forty million, one hundred twenty-eight thousand, four hundred twenty-eight".