6781378745004 has 24 divisors (see below), whose sum is σ = 15824146522800. Its totient is φ = 2260326802944.

The previous prime is 6781378744997. The next prime is 6781378745017. The reversal of 6781378745004 is 4005478731876.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16384429 + ... + 16793220.

It is an arithmetic number, because the mean of its divisors is an integer number (659339438450).

Almost surely, 2^{6781378745004} is an apocalyptic number.

It is an amenable number.

6781378745004 is an abundant number, since it is smaller than the sum of its proper divisors (9042767777796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6781378745004 is a wasteful number, since it uses less digits than its factorization.

6781378745004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33194689 (or 33194687 counting only the distinct ones).

The product of its (nonzero) digits is 31610880, while the sum is 60.

The spelling of 6781378745004 in words is "six trillion, seven hundred eighty-one billion, three hundred seventy-eight million, seven hundred forty-five thousand, four".