67786244664 has 16 divisors (see below), whose sum is σ = 169465611720. Its totient is φ = 22595414880.

The previous prime is 67786244663. The next prime is 67786244689. The reversal of 67786244664 is 46644268776.

It is a junction number, because it is equal to n+sod(n) for n = 67786244598 and 67786244607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67786244663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1412213407 + ... + 1412213454.

Almost surely, 2^67786244664 is an apocalyptic number.

It is an amenable number.

67786244664 is an abundant number, since it is smaller than the sum of its proper divisors (101679367056).

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

67786244664 is a wasteful number, since it uses less digits than its factorization.

67786244664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824426870 (or 2824426866 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 60.

The spelling of 67786244664 in words is "sixty-seven billion, seven hundred eighty-six million, two hundred forty-four thousand, six hundred sixty-four".