7854222544897 has 16 divisors (see below), whose sum is σ = 7968651863040. Its totient is φ = 7740182391552.

The previous prime is 7854222544877. The next prime is 7854222544937. The reversal of 7854222544897 is 7984452224587.

It is a cyclic number.

It is not a de Polignac number, because 7854222544897 - 2¹¹ = 7854222542849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7854222544877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89968893 + ... + 90056149.

It is an arithmetic number, because the mean of its divisors is an integer number (498040741440).

Almost surely, 2^{7854222544897} is an apocalyptic number.

It is an amenable number.

7854222544897 is a deficient number, since it is larger than the sum of its proper divisors (114429318143).

7854222544897 is a wasteful number, since it uses less digits than its factorization.

7854222544897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89472.

The product of its digits is 361267200, while the sum is 67.

The spelling of 7854222544897 in words is "seven trillion, eight hundred fifty-four billion, two hundred twenty-two million, five hundred forty-four thousand, eight hundred ninety-seven".