678340011784 has 32 divisors (see below), whose sum is σ = 1348400390400. Its totient is φ = 319357978560.

The previous prime is 678340011757. The next prime is 678340011827. The reversal of 678340011784 is 487110043876.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36953554 + ... + 36971905.

It is an arithmetic number, because the mean of its divisors is an integer number (42137512200).

Almost surely, 2^678340011784 is an apocalyptic number.

It is an amenable number.

678340011784 is a deficient number, since it is larger than the sum of its proper divisors (670060378616).

678340011784 is a wasteful number, since it uses less digits than its factorization.

678340011784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73925533 (or 73925529 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 678340011784 in words is "six hundred seventy-eight billion, three hundred forty million, eleven thousand, seven hundred eighty-four".