1378613357805 has 32 divisors (see below), whose sum is σ = 2210279961600. Its totient is φ = 733761580032.

The previous prime is 1378613357741. The next prime is 1378613357813. The reversal of 1378613357805 is 5087533168731.

It is not a de Polignac number, because 1378613357805 - 2⁶ = 1378613357741 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38741061 + ... + 38776629.

It is an arithmetic number, because the mean of its divisors is an integer number (69071248800).

Almost surely, 2^{1378613357805} is an apocalyptic number.

1378613357805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1378613357805 is a deficient number, since it is larger than the sum of its proper divisors (831666603795).

1378613357805 is a wasteful number, since it uses less digits than its factorization.

1378613357805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40773.

The product of its (nonzero) digits is 12700800, while the sum is 57.

The spelling of 1378613357805 in words is "one trillion, three hundred seventy-eight billion, six hundred thirteen million, three hundred fifty-seven thousand, eight hundred five".