67777228357912 has 8 divisors (see below), whose sum is σ = 127082303171100. Its totient is φ = 33888614178952.

The previous prime is 67777228357841. The next prime is 67777228357913. The reversal of 67777228357912 is 21975382277776.

67777228357912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67777228357913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4236076772362 + ... + 4236076772377.

Almost surely, 2^{67777228357912} is an apocalyptic number.

It is an amenable number.

67777228357912 is a deficient number, since it is larger than the sum of its proper divisors (59305074813188).

67777228357912 is a wasteful number, since it uses less digits than its factorization.

67777228357912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8472153544745 (or 8472153544741 counting only the distinct ones).

The product of its digits is 871274880, while the sum is 73.

The spelling of 67777228357912 in words is "sixty-seven trillion, seven hundred seventy-seven billion, two hundred twenty-eight million, three hundred fifty-seven thousand, nine hundred twelve".