10021616641 has 2 divisors, whose sum is σ = 10021616642. Its totient is φ = 10021616640.

The previous prime is 10021616629. The next prime is 10021616651. The reversal of 10021616641 is 14661612001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7652750400 + 2368866241 = 87480^2 + 48671^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021616641 - 2²⁵ = 9988062209 is a prime.

It is not a weakly prime, because it can be changed into another prime (10021616651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010808320 + 5010808321.

It is an arithmetic number, because the mean of its divisors is an integer number (5010808321).

Almost surely, 2^10021616641 is an apocalyptic number.

It is an amenable number.

10021616641 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021616641 is an equidigital number, since it uses as much as digits as its factorization.

10021616641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 10021616641 in words is "ten billion, twenty-one million, six hundred sixteen thousand, six hundred forty-one".