1380640347685 has 8 divisors (see below), whose sum is σ = 1658595069216. Its totient is φ = 1103294510160.

The previous prime is 1380640347677. The next prime is 1380640347701. The reversal of 1380640347685 is 5867430460831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1380640347685 - 2³ = 1380640347677 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 152216011 + ... + 152225080.

It is an arithmetic number, because the mean of its divisors is an integer number (207324383652).

Almost surely, 2^{1380640347685} is an apocalyptic number.

It is an amenable number.

1380640347685 is a deficient number, since it is larger than the sum of its proper divisors (277954721531).

1380640347685 is an equidigital number, since it uses as much as digits as its factorization.

1380640347685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304442003.

The product of its (nonzero) digits is 11612160, while the sum is 55.

The spelling of 1380640347685 in words is "one trillion, three hundred eighty billion, six hundred forty million, three hundred forty-seven thousand, six hundred eighty-five".