138484243425 has 48 divisors (see below), whose sum is σ = 249923914560. Its totient is φ = 67103904000.

The previous prime is 138484243379. The next prime is 138484243451. The reversal of 138484243425 is 524342484831.

It is not a de Polignac number, because 138484243425 - 2⁸ = 138484243169 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1360815 + ... + 1459035.

It is an arithmetic number, because the mean of its divisors is an integer number (5206748220).

Almost surely, 2^138484243425 is an apocalyptic number.

138484243425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138484243425 is a deficient number, since it is larger than the sum of its proper divisors (111439671135).

138484243425 is a wasteful number, since it uses less digits than its factorization.

138484243425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99954 (or 99949 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 48.

The spelling of 138484243425 in words is "one hundred thirty-eight billion, four hundred eighty-four million, two hundred forty-three thousand, four hundred twenty-five".