138616168001 has 4 divisors (see below), whose sum is σ = 138888498900. Its totient is φ = 138343837104.

The previous prime is 138616167973. The next prime is 138616168049. The reversal of 138616168001 is 100861616831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75735590401 + 62880577600 = 275201^2 + 250760^2 .

It is a cyclic number.

It is not a de Polignac number, because 138616168001 - 2¹⁰ = 138616166977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138616168001.

It is not an unprimeable number, because it can be changed into a prime (138616161001) 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, 136164686 + ... + 136165703.

It is an arithmetic number, because the mean of its divisors is an integer number (34722124725).

Almost surely, 2^138616168001 is an apocalyptic number.

It is an amenable number.

138616168001 is a deficient number, since it is larger than the sum of its proper divisors (272330899).

138616168001 is an equidigital number, since it uses as much as digits as its factorization.

138616168001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272330898.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 138616168001 in words is "one hundred thirty-eight billion, six hundred sixteen million, one hundred sixty-eight thousand, one".