10616325721 has 2 divisors, whose sum is σ = 10616325722. Its totient is φ = 10616325720.

The previous prime is 10616325701. The next prime is 10616325757. The reversal of 10616325721 is 12752361601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6373627225 + 4242698496 = 79835^2 + 65136^2 .

It is a cyclic number.

It is not a de Polignac number, because 10616325721 - 2⁷ = 10616325593 is a prime.

It is a super-2 number, since 2×10616325721² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10616325701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5308162860 + 5308162861.

It is an arithmetic number, because the mean of its divisors is an integer number (5308162861).

Almost surely, 2^10616325721 is an apocalyptic number.

It is an amenable number.

10616325721 is a deficient number, since it is larger than the sum of its proper divisors (1).

10616325721 is an equidigital number, since it uses as much as digits as its factorization.

10616325721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 10616325721 in words is "ten billion, six hundred sixteen million, three hundred twenty-five thousand, seven hundred twenty-one".