10004623721 has 2 divisors, whose sum is σ = 10004623722. Its totient is φ = 10004623720.

The previous prime is 10004623691. The next prime is 10004623817. The reversal of 10004623721 is 12732640001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9952855696 + 51768025 = 99764^2 + 7195^2 .

It is a cyclic number.

It is not a de Polignac number, because 10004623721 - 2¹⁴ = 10004607337 is a prime.

It is not a weakly prime, because it can be changed into another prime (10004623021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5002311860 + 5002311861.

It is an arithmetic number, because the mean of its divisors is an integer number (5002311861).

Almost surely, 2^10004623721 is an apocalyptic number.

It is an amenable number.

10004623721 is a deficient number, since it is larger than the sum of its proper divisors (1).

10004623721 is an equidigital number, since it uses as much as digits as its factorization.

10004623721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The spelling of 10004623721 in words is "ten billion, four million, six hundred twenty-three thousand, seven hundred twenty-one".