138511612627 has 4 divisors (see below), whose sum is σ = 138519199456. Its totient is φ = 138504025800.

The previous prime is 138511612607. The next prime is 138511612637. The reversal of 138511612627 is 726216115831.

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

It is a cyclic number.

It is not a de Polignac number, because 138511612627 - 2¹⁵ = 138511579859 is a prime.

It is a super-2 number, since 2×138511612627² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138511612607) 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, 3765963 + ... + 3802564.

It is an arithmetic number, because the mean of its divisors is an integer number (34629799864).

Almost surely, 2^138511612627 is an apocalyptic number.

138511612627 is a deficient number, since it is larger than the sum of its proper divisors (7586829).

138511612627 is an equidigital number, since it uses as much as digits as its factorization.

138511612627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7586828.

The product of its digits is 120960, while the sum is 43.

The spelling of 138511612627 in words is "one hundred thirty-eight billion, five hundred eleven million, six hundred twelve thousand, six hundred twenty-seven".