138037555564479 has 12 divisors (see below), whose sum is σ = 199797000348816. Its totient is φ = 91836073924992.

The previous prime is 138037555564459. The next prime is 138037555564541. The reversal of 138037555564479 is 974465555730831.

138037555564479 is a `hidden beast` number, since 1 + 3 + 8 + 0 + 3 + 7 + 5 + 55 + 564 + 4 + 7 + 9 = 666.

It is not a de Polignac number, because 138037555564479 - 2⁹ = 138037555563967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138037555564409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15746921874 + ... + 15746930639.

It is an arithmetic number, because the mean of its divisors is an integer number (16649750029068).

Almost surely, 2^{138037555564479} is an apocalyptic number.

138037555564479 is a deficient number, since it is larger than the sum of its proper divisors (61759444784337).

138037555564479 is a wasteful number, since it uses less digits than its factorization.

138037555564479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31493853006 (or 31493853003 counting only the distinct ones).

The product of its (nonzero) digits is 1905120000, while the sum is 72.

The spelling of 138037555564479 in words is "one hundred thirty-eight trillion, thirty-seven billion, five hundred fifty-five million, five hundred sixty-four thousand, four hundred seventy-nine".