10720664653 has 2 divisors, whose sum is σ = 10720664654. Its totient is φ = 10720664652.

The previous prime is 10720664597. The next prime is 10720664657. The reversal of 10720664653 is 35646602701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10719082089 + 1582564 = 103533^2 + 1258^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10720664653 is a prime.

It is a super-2 number, since 2×10720664653² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10720664657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5360332326 + 5360332327.

It is an arithmetic number, because the mean of its divisors is an integer number (5360332327).

Almost surely, 2^10720664653 is an apocalyptic number.

It is an amenable number.

10720664653 is a deficient number, since it is larger than the sum of its proper divisors (1).

10720664653 is an equidigital number, since it uses as much as digits as its factorization.

10720664653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 10720664653 in words is "ten billion, seven hundred twenty million, six hundred sixty-four thousand, six hundred fifty-three".