138658473228 has 48 divisors (see below), whose sum is σ = 355525156224. Its totient is φ = 41711015040.

The previous prime is 138658473223. The next prime is 138658473229. The reversal of 138658473228 is 822374856831.

It is not an unprimeable number, because it can be changed into a prime (138658473223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3815650 + ... + 3851817.

It is an arithmetic number, because the mean of its divisors is an integer number (7406774088).

Almost surely, 2^138658473228 is an apocalyptic number.

It is an amenable number.

138658473228 is an abundant number, since it is smaller than the sum of its proper divisors (216866682996).

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

138658473228 is a wasteful number, since it uses less digits than its factorization.

138658473228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7667622 (or 7667620 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 57.

The spelling of 138658473228 in words is "one hundred thirty-eight billion, six hundred fifty-eight million, four hundred seventy-three thousand, two hundred twenty-eight".