138774409606 has 16 divisors (see below), whose sum is σ = 237913777440. Its totient is φ = 59471049600.

The previous prime is 138774409591. The next prime is 138774409621. The reversal of 138774409606 is 606904477831.

It is an interprime number because it is at equal distance from previous prime (138774409591) and next prime (138774409621).

It is a super-2 number, since 2×138774409606² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 68445 + ... + 531256.

It is an arithmetic number, because the mean of its divisors is an integer number (14869611090).

Almost surely, 2^138774409606 is an apocalyptic number.

138774409606 is a deficient number, since it is larger than the sum of its proper divisors (99139367834).

138774409606 is a wasteful number, since it uses less digits than its factorization.

138774409606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616239.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 138774409606 in words is "one hundred thirty-eight billion, seven hundred seventy-four million, four hundred nine thousand, six hundred six".