1387370808685 has 8 divisors (see below), whose sum is σ = 1665065554200. Its totient is φ = 1109749591104.

The previous prime is 1387370808667. The next prime is 1387370808727. The reversal of 1387370808685 is 5868080737831.

It can be written as a sum of positive squares in 4 ways, for example, as 390382537636 + 996988271049 = 624806^2 + 998493^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1387370808685 - 2⁵ = 1387370808653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18340462 + ... + 18415951.

It is an arithmetic number, because the mean of its divisors is an integer number (208133194275).

Almost surely, 2^{1387370808685} is an apocalyptic number.

It is an amenable number.

1387370808685 is a deficient number, since it is larger than the sum of its proper divisors (277694745515).

1387370808685 is an equidigital number, since it uses as much as digits as its factorization.

1387370808685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36763967.

The product of its (nonzero) digits is 54190080, while the sum is 64.

The spelling of 1387370808685 in words is "one trillion, three hundred eighty-seven billion, three hundred seventy million, eight hundred eight thousand, six hundred eighty-five".