10720004621 has 2 divisors, whose sum is σ = 10720004622. Its totient is φ = 10720004620.

The previous prime is 10720004609. The next prime is 10720004639. The reversal of 10720004621 is 12640002701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6104296900 + 4615707721 = 78130^2 + 67939^2 .

It is a cyclic number.

It is not a de Polignac number, because 10720004621 - 2²² = 10715810317 is a prime.

It is a super-2 number, since 2×10720004621² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10720004021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5360002310 + 5360002311.

It is an arithmetic number, because the mean of its divisors is an integer number (5360002311).

Almost surely, 2^10720004621 is an apocalyptic number.

It is an amenable number.

10720004621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10720004621 is an equidigital number, since it uses as much as digits as its factorization.

10720004621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The spelling of 10720004621 in words is "ten billion, seven hundred twenty million, four thousand, six hundred twenty-one".