67786810564 has 12 divisors (see below), whose sum is σ = 129411183888. Its totient is φ = 30812186600.

The previous prime is 67786810543. The next prime is 67786810571. The reversal of 67786810564 is 46501868776.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 67786810499 and 67786810508.

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, 770304622 + ... + 770304709.

It is an arithmetic number, because the mean of its divisors is an integer number (10784265324).

Almost surely, 2^67786810564 is an apocalyptic number.

It is an amenable number.

67786810564 is a deficient number, since it is larger than the sum of its proper divisors (61624373324).

67786810564 is a wasteful number, since it uses less digits than its factorization.

67786810564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540609346 (or 1540609344 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 67786810564 in words is "sixty-seven billion, seven hundred eighty-six million, eight hundred ten thousand, five hundred sixty-four".