9972717653 has 2 divisors, whose sum is σ = 9972717654. Its totient is φ = 9972717652.

The previous prime is 9972717631. The next prime is 9972717721. The reversal of 9972717653 is 3567172799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7900009924 + 2072707729 = 88882^2 + 45527^2 .

It is a cyclic number.

It is not a de Polignac number, because 9972717653 - 2⁶ = 9972717589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9972717613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4986358826 + 4986358827.

It is an arithmetic number, because the mean of its divisors is an integer number (4986358827).

Almost surely, 2^9972717653 is an apocalyptic number.

It is an amenable number.

9972717653 is a deficient number, since it is larger than the sum of its proper divisors (1).

9972717653 is an equidigital number, since it uses as much as digits as its factorization.

9972717653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5000940, while the sum is 56.

The square root of 9972717653 is about 99863.4950970574. The cubic root of 9972717653 is about 2152.4736377188.

The spelling of 9972717653 in words is "nine billion, nine hundred seventy-two million, seven hundred seventeen thousand, six hundred fifty-three".