7138844244455 has 64 divisors (see below), whose sum is σ = 11272249958400. Its totient is φ = 4204842606720.

The previous prime is 7138844244451. The next prime is 7138844244461. The reversal of 7138844244455 is 5544424488317.

It is not a de Polignac number, because 7138844244455 - 2² = 7138844244451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7138844244394 and 7138844244403.

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 polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1484894 + ... + 4059876.

It is an arithmetic number, because the mean of its divisors is an integer number (176128905600).

Almost surely, 2^{7138844244455} is an apocalyptic number.

7138844244455 is a deficient number, since it is larger than the sum of its proper divisors (4133405713945).

7138844244455 is a wasteful number, since it uses less digits than its factorization.

7138844244455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575404.

The product of its digits is 68812800, while the sum is 59.

The spelling of 7138844244455 in words is "seven trillion, one hundred thirty-eight billion, eight hundred forty-four million, two hundred forty-four thousand, four hundred fifty-five".