138148652568 has 16 divisors (see below), whose sum is σ = 345371631480. Its totient is φ = 46049550848.

The previous prime is 138148652563. The next prime is 138148652581. The reversal of 138148652568 is 865256841831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138148652563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2878096905 + ... + 2878096952.

Almost surely, 2^138148652568 is an apocalyptic number.

It is an amenable number.

138148652568 is an abundant number, since it is smaller than the sum of its proper divisors (207222978912).

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

138148652568 is a wasteful number, since it uses less digits than its factorization.

138148652568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5756193866 (or 5756193862 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 57.

The spelling of 138148652568 in words is "one hundred thirty-eight billion, one hundred forty-eight million, six hundred fifty-two thousand, five hundred sixty-eight".