138130795571987 has 2 divisors, whose sum is σ = 138130795571988. Its totient is φ = 138130795571986.

The previous prime is 138130795571981. The next prime is 138130795572079. The reversal of 138130795571987 is 789175597031831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138130795571987 - 2⁸ = 138130795571731 is a prime.

It is not a weakly prime, because it can be changed into another prime (138130795571981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69065397785993 + 69065397785994.

It is an arithmetic number, because the mean of its divisors is an integer number (69065397785994).

Almost surely, 2^{138130795571987} is an apocalyptic number.

138130795571987 is a deficient number, since it is larger than the sum of its proper divisors (1).

138130795571987 is an equidigital number, since it uses as much as digits as its factorization.

138130795571987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400075200, while the sum is 74.

The spelling of 138130795571987 in words is "one hundred thirty-eight trillion, one hundred thirty billion, seven hundred ninety-five million, five hundred seventy-one thousand, nine hundred eighty-seven".