138315468428 has 24 divisors (see below), whose sum is σ = 243625460400. Its totient is φ = 68708502720.

The previous prime is 138315468373. The next prime is 138315468433. The reversal of 138315468428 is 824864513831.

It is a self number, because there is not a number n which added to its sum of digits gives 138315468428.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1828298 + ... + 1902446.

It is an arithmetic number, because the mean of its divisors is an integer number (10151060850).

Almost surely, 2^138315468428 is an apocalyptic number.

It is an amenable number.

138315468428 is a deficient number, since it is larger than the sum of its proper divisors (105309991972).

138315468428 is a wasteful number, since it uses less digits than its factorization.

138315468428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77177 (or 77175 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 53.

The spelling of 138315468428 in words is "one hundred thirty-eight billion, three hundred fifteen million, four hundred sixty-eight thousand, four hundred twenty-eight".