138462551065 has 8 divisors (see below), whose sum is σ = 175928888520. Its totient is φ = 104254156032.

The previous prime is 138462551063. The next prime is 138462551111. The reversal of 138462551065 is 560155264831.

It can be written as a sum of positive squares in 4 ways, for example, as 26226830809 + 112235720256 = 161947^2 + 335016^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138462551065 - 2¹ = 138462551063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138462551063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814485510 + ... + 814485679.

It is an arithmetic number, because the mean of its divisors is an integer number (21991111065).

Almost surely, 2^138462551065 is an apocalyptic number.

It is an amenable number.

138462551065 is a deficient number, since it is larger than the sum of its proper divisors (37466337455).

138462551065 is a wasteful number, since it uses less digits than its factorization.

138462551065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628971211.

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 138462551065 in words is "one hundred thirty-eight billion, four hundred sixty-two million, five hundred fifty-one thousand, sixty-five".