7278444451223 has 8 divisors (see below), whose sum is σ = 7983989294736. Its totient is φ = 6580210953600.

The previous prime is 7278444451207. The next prime is 7278444451261. The reversal of 7278444451223 is 3221544448727.

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

It is a cyclic number.

It is not a de Polignac number, because 7278444451223 - 2⁴ = 7278444451207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7278444451123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1827834386 + ... + 1827838367.

It is an arithmetic number, because the mean of its divisors is an integer number (997998661842).

Almost surely, 2^{7278444451223} is an apocalyptic number.

7278444451223 is a deficient number, since it is larger than the sum of its proper divisors (705544843513).

7278444451223 is a wasteful number, since it uses less digits than its factorization.

7278444451223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655672945.

The product of its digits is 12042240, while the sum is 53.

The spelling of 7278444451223 in words is "seven trillion, two hundred seventy-eight billion, four hundred forty-four million, four hundred fifty-one thousand, two hundred twenty-three".