67303778312 has 8 divisors (see below), whose sum is σ = 126194584350. Its totient is φ = 33651889152.

The previous prime is 67303778291. The next prime is 67303778317. The reversal of 67303778312 is 21387730376.

It can be written as a sum of positive squares in only one way, i.e., 46175992996 + 21127785316 = 214886^2 + 145354^2 .

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

It is not an unprimeable number, because it can be changed into a prime (67303778317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4206486137 + ... + 4206486152.

Almost surely, 2^67303778312 is an apocalyptic number.

It is an amenable number.

67303778312 is a deficient number, since it is larger than the sum of its proper divisors (58890806038).

67303778312 is a wasteful number, since it uses less digits than its factorization.

67303778312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8412972295 (or 8412972291 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 47.

The spelling of 67303778312 in words is "sixty-seven billion, three hundred three million, seven hundred seventy-eight thousand, three hundred twelve".