138264445127 has 4 divisors (see below), whose sum is σ = 139180103856. Its totient is φ = 137348786400.

The previous prime is 138264445117. The next prime is 138264445139. The reversal of 138264445127 is 721544462831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 721544462831 = 19717 ⋅36595043.

It is a cyclic number.

It is not a de Polignac number, because 138264445127 - 2⁶ = 138264445063 is a prime.

It is a super-2 number, since 2×138264445127² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138264445117) 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, 457829138 + ... + 457829439.

It is an arithmetic number, because the mean of its divisors is an integer number (34795025964).

Almost surely, 2^138264445127 is an apocalyptic number.

138264445127 is a deficient number, since it is larger than the sum of its proper divisors (915658729).

138264445127 is an equidigital number, since it uses as much as digits as its factorization.

138264445127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915658728.

The product of its digits is 1290240, while the sum is 47.

The spelling of 138264445127 in words is "one hundred thirty-eight billion, two hundred sixty-four million, four hundred forty-five thousand, one hundred twenty-seven".