138848417552431 has 8 divisors (see below), whose sum is σ = 139191500471760. Its totient is φ = 138505714362432.

The previous prime is 138848417552357. The next prime is 138848417552447. The reversal of 138848417552431 is 134255714848831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138848417552431 - 2²¹ = 138848415455279 is a prime.

It is a super-2 number, since 2×138848417552431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138848417552231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94200121 + ... + 95662738.

It is an arithmetic number, because the mean of its divisors is an integer number (17398937558970).

Almost surely, 2^{138848417552431} is an apocalyptic number.

138848417552431 is a deficient number, since it is larger than the sum of its proper divisors (343082919329).

138848417552431 is a wasteful number, since it uses less digits than its factorization.

138848417552431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189864665.

The product of its digits is 103219200, while the sum is 64.

The spelling of 138848417552431 in words is "one hundred thirty-eight trillion, eight hundred forty-eight billion, four hundred seventeen million, five hundred fifty-two thousand, four hundred thirty-one".