1378047370817 has 32 divisors (see below), whose sum is σ = 1578135218688. Its totient is φ = 1193521545216.

The previous prime is 1378047370811. The next prime is 1378047370933. The reversal of 1378047370817 is 7180737408731.

It is not a de Polignac number, because 1378047370817 - 2⁴ = 1378047370801 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1378047370811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128149313 + ... + 128160065.

It is an arithmetic number, because the mean of its divisors is an integer number (49316725584).

Almost surely, 2^{1378047370817} is an apocalyptic number.

It is an amenable number.

1378047370817 is a deficient number, since it is larger than the sum of its proper divisors (200087847871).

1378047370817 is a wasteful number, since it uses less digits than its factorization.

1378047370817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18929.

The product of its (nonzero) digits is 5531904, while the sum is 56.

The spelling of 1378047370817 in words is "one trillion, three hundred seventy-eight billion, forty-seven million, three hundred seventy thousand, eight hundred seventeen".