7138844244454 has 8 divisors (see below), whose sum is σ = 11531979164160. Its totient is φ = 3294851189736.

The previous prime is 7138844244451. The next prime is 7138844244461. The reversal of 7138844244454 is 4544424488317.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7138844244451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137285466214 + ... + 137285466265.

It is an arithmetic number, because the mean of its divisors is an integer number (1441497395520).

Almost surely, 2^{7138844244454} is an apocalyptic number.

7138844244454 is a deficient number, since it is larger than the sum of its proper divisors (4393134919706).

7138844244454 is a wasteful number, since it uses less digits than its factorization.

7138844244454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274570932494.

The product of its digits is 55050240, while the sum is 58.

The spelling of 7138844244454 in words is "seven trillion, one hundred thirty-eight billion, eight hundred forty-four million, two hundred forty-four thousand, four hundred fifty-four".