67780067672 has 32 divisors (see below), whose sum is σ = 133345910880. Its totient is φ = 32237441280.

The previous prime is 67780067671. The next prime is 67780067683. The reversal of 67780067672 is 27676008776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67780067671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 984293 + ... + 1050900.

It is an arithmetic number, because the mean of its divisors is an integer number (4167059715).

Almost surely, 2^67780067672 is an apocalyptic number.

It is an amenable number.

67780067672 is a deficient number, since it is larger than the sum of its proper divisors (65565843208).

67780067672 is a wasteful number, since it uses less digits than its factorization.

67780067672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035403 (or 2035399 counting only the distinct ones).

The product of its (nonzero) digits is 8297856, while the sum is 56.

The spelling of 67780067672 in words is "sixty-seven billion, seven hundred eighty million, sixty-seven thousand, six hundred seventy-two".