138080607481 has 2 divisors, whose sum is σ = 138080607482. Its totient is φ = 138080607480.

The previous prime is 138080607443. The next prime is 138080607541. The reversal of 138080607481 is 184706080831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73940486400 + 64140121081 = 271920^2 + 253259^2 .

It is a cyclic number.

It is not a de Polignac number, because 138080607481 - 2⁹ = 138080606969 is a prime.

It is a super-2 number, since 2×138080607481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (138080607421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69040303740 + 69040303741.

It is an arithmetic number, because the mean of its divisors is an integer number (69040303741).

Almost surely, 2^138080607481 is an apocalyptic number.

It is an amenable number.

138080607481 is a deficient number, since it is larger than the sum of its proper divisors (1).

138080607481 is an equidigital number, since it uses as much as digits as its factorization.

138080607481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 46.

The spelling of 138080607481 in words is "one hundred thirty-eight billion, eighty million, six hundred seven thousand, four hundred eighty-one".