39138261312 has 28 divisors (see below), whose sum is σ = 103553316896. Its totient is φ = 13046087040.

The previous prime is 39138261287. The next prime is 39138261319. The reversal of 39138261312 is 21316283193.

It is a happy number.

It is a super-2 number, since 2×39138261312² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39138261319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101922364 + ... + 101922747.

Almost surely, 2^39138261312 is an apocalyptic number.

39138261312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

39138261312 is an abundant number, since it is smaller than the sum of its proper divisors (64415055584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39138261312 is a wasteful number, since it uses less digits than its factorization.

39138261312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203845126 (or 203845116 counting only the distinct ones).

The product of its digits is 46656, while the sum is 39.

The spelling of 39138261312 in words is "thirty-nine billion, one hundred thirty-eight million, two hundred sixty-one thousand, three hundred twelve".