138848215275 has 576 divisors, whose sum is σ = 347634892800. Its totient is φ = 51184742400.

The previous prime is 138848215267. The next prime is 138848215307. The reversal of 138848215275 is 572512848831.

It is a happy number.

138848215275 is a `hidden beast` number, since 1 + 3 + 8 + 8 + 482 + 152 + 7 + 5 = 666.

It is not a de Polignac number, because 138848215275 - 2³ = 138848215267 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 697729626 + ... + 697729824.

It is an arithmetic number, because the mean of its divisors is an integer number (603532800).

Almost surely, 2^138848215275 is an apocalyptic number.

138848215275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138848215275 is an abundant number, since it is smaller than the sum of its proper divisors (208786677525).

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

138848215275 is a wasteful number, since it uses less digits than its factorization.

138848215275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 368 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 54.

The spelling of 138848215275 in words is "one hundred thirty-eight billion, eight hundred forty-eight million, two hundred fifteen thousand, two hundred seventy-five".