1378317165128 has 16 divisors (see below), whose sum is σ = 2604693857280. Its totient is φ = 683732136528.

The previous prime is 1378317165109. The next prime is 1378317165217. The reversal of 1378317165128 is 8215617138731.

It is a happy number.

It is a super-4 number, since 4×1378317165128⁴ (a number of 50 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1378317165128.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678304676 + ... + 678306707.

It is an arithmetic number, because the mean of its divisors is an integer number (162793366080).

Almost surely, 2^{1378317165128} is an apocalyptic number.

It is an amenable number.

1378317165128 is a deficient number, since it is larger than the sum of its proper divisors (1226376692152).

1378317165128 is a wasteful number, since it uses less digits than its factorization.

1378317165128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356611516 (or 1356611512 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 53.

The spelling of 1378317165128 in words is "one trillion, three hundred seventy-eight billion, three hundred seventeen million, one hundred sixty-five thousand, one hundred twenty-eight".