1378863796805 has 16 divisors (see below), whose sum is σ = 1821032034624. Its totient is φ = 993935604480.

The previous prime is 1378863796787. The next prime is 1378863796813. The reversal of 1378863796805 is 5086973688731.

It is a happy number.

It is not a de Polignac number, because 1378863796805 - 2⁸ = 1378863796549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110924099 + ... + 110936528.

It is an arithmetic number, because the mean of its divisors is an integer number (113814502164).

Almost surely, 2^{1378863796805} is an apocalyptic number.

It is an amenable number.

1378863796805 is a deficient number, since it is larger than the sum of its proper divisors (442168237819).

1378863796805 is a wasteful number, since it uses less digits than its factorization.

1378863796805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221860756.

The product of its (nonzero) digits is 365783040, while the sum is 71.

The spelling of 1378863796805 in words is "one trillion, three hundred seventy-eight billion, eight hundred sixty-three million, seven hundred ninety-six thousand, eight hundred five".