67655135272 has 32 divisors (see below), whose sum is σ = 129025713600. Its totient is φ = 33248476800.

The previous prime is 67655135257. The next prime is 67655135279. The reversal of 67655135272 is 27253155676.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (67655135279) 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, 4353997 + ... + 4369507.

It is an arithmetic number, because the mean of its divisors is an integer number (4032053550).

Almost surely, 2^67655135272 is an apocalyptic number.

It is an amenable number.

67655135272 is a deficient number, since it is larger than the sum of its proper divisors (61370578328).

67655135272 is a wasteful number, since it uses less digits than its factorization.

67655135272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24817 (or 24813 counting only the distinct ones).

The product of its digits is 2646000, while the sum is 49.

The spelling of 67655135272 in words is "sixty-seven billion, six hundred fifty-five million, one hundred thirty-five thousand, two hundred seventy-two".