138147724147876 has 27 divisors (see below), whose sum is σ = 245928039110859. Its totient is φ = 67902436938648.

The previous prime is 138147724147819. The next prime is 138147724147931. The reversal of 138147724147876 is 678741427741831.

The square root of 138147724147876 is 11753626.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×138147724147876² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1386878065 + ... + 1386977671.

Almost surely, 2^{138147724147876} is an apocalyptic number.

138147724147876 is the 11753626-th square number.

It is an amenable number.

138147724147876 is a deficient number, since it is larger than the sum of its proper divisors (107780314962983).

138147724147876 is an frugal number, since it uses more digits than its factorization.

138147724147876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199336 (or 99668 counting only the distinct ones).

The product of its digits is 354041856, while the sum is 70.

The spelling of 138147724147876 in words is "one hundred thirty-eight trillion, one hundred forty-seven billion, seven hundred twenty-four million, one hundred forty-seven thousand, eight hundred seventy-six".