8407981722653 has 2 divisors, whose sum is σ = 8407981722654. Its totient is φ = 8407981722652.

The previous prime is 8407981722631. The next prime is 8407981722667. The reversal of 8407981722653 is 3562271897048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6849746308804 + 1558235413849 = 2617202^2 + 1248293^2 .

It is a cyclic number.

It is not a de Polignac number, because 8407981722653 - 2¹⁴ = 8407981706269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8407981722053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4203990861326 + 4203990861327.

It is an arithmetic number, because the mean of its divisors is an integer number (4203990861327).

It is a 1-persistent number, because it is pandigital, but 2⋅8407981722653 = 16815963445306 is not.

Almost surely, 2^{8407981722653} is an apocalyptic number.

It is an amenable number.

8407981722653 is a deficient number, since it is larger than the sum of its proper divisors (1).

8407981722653 is an equidigital number, since it uses as much as digits as its factorization.

8407981722653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40642560, while the sum is 62.

The spelling of 8407981722653 in words is "eight trillion, four hundred seven billion, nine hundred eighty-one million, seven hundred twenty-two thousand, six hundred fifty-three".