67866020616 has 32 divisors (see below), whose sum is σ = 169672464000. Its totient is φ = 22621018560.

The previous prime is 67866020587. The next prime is 67866020623. The reversal of 67866020616 is 61602066876.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681585 + ... + 774783.

It is an arithmetic number, because the mean of its divisors is an integer number (5302264500).

Almost surely, 2^67866020616 is an apocalyptic number.

It is an amenable number.

67866020616 is an abundant number, since it is smaller than the sum of its proper divisors (101806443384).

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

67866020616 is a wasteful number, since it uses less digits than its factorization.

67866020616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123549 (or 123545 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 67866020616 in words is "sixty-seven billion, eight hundred sixty-six million, twenty thousand, six hundred sixteen".