138344815306463 has 2 divisors, whose sum is σ = 138344815306464. Its totient is φ = 138344815306462.

The previous prime is 138344815306457. The next prime is 138344815306493. The reversal of 138344815306463 is 364603518443831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138344815306463 - 2²⁶ = 138344748197599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138344815306493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69172407653231 + 69172407653232.

It is an arithmetic number, because the mean of its divisors is an integer number (69172407653232).

Almost surely, 2^{138344815306463} is an apocalyptic number.

138344815306463 is a deficient number, since it is larger than the sum of its proper divisors (1).

138344815306463 is an equidigital number, since it uses as much as digits as its factorization.

138344815306463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59719680, while the sum is 59.

The spelling of 138344815306463 in words is "one hundred thirty-eight trillion, three hundred forty-four billion, eight hundred fifteen million, three hundred six thousand, four hundred sixty-three".