1313128839788 has 24 divisors (see below), whose sum is σ = 2306266872000. Its totient is φ = 654195793680.

The previous prime is 1313128839787. The next prime is 1313128839817. The reversal of 1313128839788 is 8879388213131.

It is a self number, because there is not a number n which added to its sum of digits gives 1313128839788.

It is not an unprimeable number, because it can be changed into a prime (1313128839787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18859463 + ... + 18928961.

It is an arithmetic number, because the mean of its divisors is an integer number (96094453000).

Almost surely, 2^{1313128839788} is an apocalyptic number.

It is an amenable number.

1313128839788 is a deficient number, since it is larger than the sum of its proper divisors (993138032212).

1313128839788 is a wasteful number, since it uses less digits than its factorization.

1313128839788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86477 (or 86475 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 62.

The spelling of 1313128839788 in words is "one trillion, three hundred thirteen billion, one hundred twenty-eight million, eight hundred thirty-nine thousand, seven hundred eighty-eight".