138611111388771 has 64 divisors (see below), whose sum is σ = 212628750888960. Its totient is φ = 78679018828800.

The previous prime is 138611111388767. The next prime is 138611111388829. The reversal of 138611111388771 is 177883111116831.

It is not a de Polignac number, because 138611111388771 - 2² = 138611111388767 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138611111388271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3178476015 + ... + 3178519623.

It is an arithmetic number, because the mean of its divisors is an integer number (3322324232640).

Almost surely, 2^{138611111388771} is an apocalyptic number.

138611111388771 is a deficient number, since it is larger than the sum of its proper divisors (74017639500189).

138611111388771 is a wasteful number, since it uses less digits than its factorization.

138611111388771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45604.

The product of its digits is 1354752, while the sum is 57.

The spelling of 138611111388771 in words is "one hundred thirty-eight trillion, six hundred eleven billion, one hundred eleven million, three hundred eighty-eight thousand, seven hundred seventy-one".