67385255538 has 48 divisors (see below), whose sum is σ = 141343858656. Its totient is φ = 21404134080.

The previous prime is 67385255533. The next prime is 67385255549. The reversal of 67385255538 is 83555258376.

It is not an unprimeable number, because it can be changed into a prime (67385255533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 380781 + ... + 528927.

It is an arithmetic number, because the mean of its divisors is an integer number (2944663722).

Almost surely, 2^67385255538 is an apocalyptic number.

67385255538 is an abundant number, since it is smaller than the sum of its proper divisors (73958603118).

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

67385255538 is a wasteful number, since it uses less digits than its factorization.

67385255538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148279 (or 148236 counting only the distinct ones).

The product of its digits is 30240000, while the sum is 57.

The spelling of 67385255538 in words is "sixty-seven billion, three hundred eighty-five million, two hundred fifty-five thousand, five hundred thirty-eight".