138614091612 has 12 divisors (see below), whose sum is σ = 323432880456. Its totient is φ = 46204697200.

The previous prime is 138614091509. The next prime is 138614091617. The reversal of 138614091612 is 216190416831.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138614091617) 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, 5775587139 + ... + 5775587162.

It is an arithmetic number, because the mean of its divisors is an integer number (26952740038).

Almost surely, 2^138614091612 is an apocalyptic number.

138614091612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138614091612 is an abundant number, since it is smaller than the sum of its proper divisors (184818788844).

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

138614091612 is a wasteful number, since it uses less digits than its factorization.

138614091612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11551174308 (or 11551174306 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 138614091612 in words is "one hundred thirty-eight billion, six hundred fourteen million, ninety-one thousand, six hundred twelve".