138777332684 has 6 divisors (see below), whose sum is σ = 242860332204. Its totient is φ = 69388666340.

The previous prime is 138777332651. The next prime is 138777332689. The reversal of 138777332684 is 486233777831.

It is a super-2 number, since 2×138777332684² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138777332689) 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 as a sum of consecutive naturals, namely, 17347166582 + ... + 17347166589.

It is an arithmetic number, because the mean of its divisors is an integer number (40476722034).

Almost surely, 2^138777332684 is an apocalyptic number.

It is an amenable number.

138777332684 is a deficient number, since it is larger than the sum of its proper divisors (104082999520).

138777332684 is a wasteful number, since it uses less digits than its factorization.

138777332684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34694333175 (or 34694333173 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 59.

The spelling of 138777332684 in words is "one hundred thirty-eight billion, seven hundred seventy-seven million, three hundred thirty-two thousand, six hundred eighty-four".