138614614477 has 2 divisors, whose sum is σ = 138614614478. Its totient is φ = 138614614476.

The previous prime is 138614614427. The next prime is 138614614517. The reversal of 138614614477 is 774416416831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103641500356 + 34973114121 = 321934^2 + 187011^2 .

It is a cyclic number.

It is not a de Polignac number, because 138614614477 - 2¹⁵ = 138614581709 is a prime.

It is a super-2 number, since 2×138614614477² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138614614417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69307307238 + 69307307239.

It is an arithmetic number, because the mean of its divisors is an integer number (69307307239).

Almost surely, 2^138614614477 is an apocalyptic number.

It is an amenable number.

138614614477 is a deficient number, since it is larger than the sum of its proper divisors (1).

138614614477 is an equidigital number, since it uses as much as digits as its factorization.

138614614477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2709504, while the sum is 52.

The spelling of 138614614477 in words is "one hundred thirty-eight billion, six hundred fourteen million, six hundred fourteen thousand, four hundred seventy-seven".