1378953087605 has 16 divisors (see below), whose sum is σ = 1774700305920. Its totient is φ = 1025382391488.

The previous prime is 1378953087593. The next prime is 1378953087683. The reversal of 1378953087605 is 5067803598731.

It is a cyclic number.

It is not a de Polignac number, because 1378953087605 - 2⁸ = 1378953087349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136931717 + ... + 136941786.

It is an arithmetic number, because the mean of its divisors is an integer number (110918769120).

Almost surely, 2^{1378953087605} is an apocalyptic number.

It is an amenable number.

1378953087605 is a deficient number, since it is larger than the sum of its proper divisors (395747218315).

1378953087605 is a wasteful number, since it uses less digits than its factorization.

1378953087605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273873580.

The product of its (nonzero) digits is 38102400, while the sum is 62.

The spelling of 1378953087605 in words is "one trillion, three hundred seventy-eight billion, nine hundred fifty-three million, eighty-seven thousand, six hundred five".