67809672816 has 20 divisors (see below), whose sum is σ = 175174988232. Its totient is φ = 22603224256.

The previous prime is 67809672779. The next prime is 67809672839. The reversal of 67809672816 is 61827690876.

It is a self number, because there is not a number n which added to its sum of digits gives 67809672816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706350711 + ... + 706350806.

Almost surely, 2^67809672816 is an apocalyptic number.

It is an amenable number.

67809672816 is an abundant number, since it is smaller than the sum of its proper divisors (107365315416).

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

67809672816 is a wasteful number, since it uses less digits than its factorization.

67809672816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412701528 (or 1412701522 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 67809672816 in words is "sixty-seven billion, eight hundred nine million, six hundred seventy-two thousand, eight hundred sixteen".