9726443625049 has 6 divisors (see below), whose sum is σ = 10167718950746. Its totient is φ = 9303554771280.

The previous prime is 9726443625029. The next prime is 9726443625149. The reversal of 9726443625049 is 9405263446279.

It can be written as a sum of positive squares in only one way, i.e., 9726196129225 + 247495824 = 3118685^2 + 15732^2 .

It is not a de Polignac number, because 9726443625049 - 2⁷ = 9726443624921 is a prime.

It is a super-4 number, since 4×9726443625049⁴ (a number of 53 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9726443625029) 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 5 ways as a sum of consecutive naturals, for example, 9193235412 + ... + 9193236469.

Almost surely, 2^{9726443625049} is an apocalyptic number.

It is an amenable number.

9726443625049 is a deficient number, since it is larger than the sum of its proper divisors (441275325697).

9726443625049 is a wasteful number, since it uses less digits than its factorization.

9726443625049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18386471927 (or 18386471904 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 61.

The spelling of 9726443625049 in words is "nine trillion, seven hundred twenty-six billion, four hundred forty-three million, six hundred twenty-five thousand, forty-nine".