138134771649 has 12 divisors (see below), whose sum is σ = 228032004096. Its totient is φ = 78934155192.

The previous prime is 138134771639. The next prime is 138134771689. The reversal of 138134771649 is 946177431831.

138134771649 is a `hidden beast` number, since 1 + 3 + 8 + 1 + 3 + 477 + 164 + 9 = 666.

It is not a de Polignac number, because 138134771649 - 2¹¹ = 138134769601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138134771595 and 138134771604.

It is not an unprimeable number, because it can be changed into a prime (138134771629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1096307649 + ... + 1096307774.

It is an arithmetic number, because the mean of its divisors is an integer number (19002667008).

Almost surely, 2^138134771649 is an apocalyptic number.

It is an amenable number.

138134771649 is a deficient number, since it is larger than the sum of its proper divisors (89897232447).

138134771649 is a wasteful number, since it uses less digits than its factorization.

138134771649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192615436 (or 2192615433 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The spelling of 138134771649 in words is "one hundred thirty-eight billion, one hundred thirty-four million, seven hundred seventy-one thousand, six hundred forty-nine".