138934264813444 has 9 divisors (see below), whose sum is σ = 243135004678167. Its totient is φ = 69467120619684.

The previous prime is 138934264813411. The next prime is 138934264813451. The reversal of 138934264813444 is 444318462439831.

The square root of 138934264813444 is 11787038.

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

It is a super-2 number, since 2×138934264813444² (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 2 ways as a sum of consecutive naturals, for example, 20627317 + ... + 26520835.

Almost surely, 2^{138934264813444} is an apocalyptic number.

138934264813444 is the 11787038-th square number.

It is an amenable number.

138934264813444 is a deficient number, since it is larger than the sum of its proper divisors (104200739864723).

138934264813444 is an frugal number, since it uses more digits than its factorization.

138934264813444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11787042 (or 5893521 counting only the distinct ones).

The product of its digits is 191102976, while the sum is 64.

The spelling of 138934264813444 in words is "one hundred thirty-eight trillion, nine hundred thirty-four billion, two hundred sixty-four million, eight hundred thirteen thousand, four hundred forty-four".