678767641803 has 16 divisors (see below), whose sum is σ = 1009588003200. Its totient is φ = 450708921000.

The previous prime is 678767641789. The next prime is 678767641807. The reversal of 678767641803 is 308146767876.

It is a happy number.

It is not a de Polignac number, because 678767641803 - 2¹⁰ = 678767640779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (678767641807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50071993 + ... + 50085546.

It is an arithmetic number, because the mean of its divisors is an integer number (63099250200).

Almost surely, 2^678767641803 is an apocalyptic number.

678767641803 is a deficient number, since it is larger than the sum of its proper divisors (330820361397).

678767641803 is a wasteful number, since it uses less digits than its factorization.

678767641803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100157799 (or 100157793 counting only the distinct ones).

The product of its (nonzero) digits is 56899584, while the sum is 63.

The spelling of 678767641803 in words is "six hundred seventy-eight billion, seven hundred sixty-seven million, six hundred forty-one thousand, eight hundred three".