10216432661 has 2 divisors, whose sum is σ = 10216432662. Its totient is φ = 10216432660.

The previous prime is 10216432631. The next prime is 10216432679. The reversal of 10216432661 is 16623461201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9858504100 + 357928561 = 99290^2 + 18919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10216432661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10216432631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5108216330 + 5108216331.

It is an arithmetic number, because the mean of its divisors is an integer number (5108216331).

Almost surely, 2^10216432661 is an apocalyptic number.

It is an amenable number.

10216432661 is a deficient number, since it is larger than the sum of its proper divisors (1).

10216432661 is an equidigital number, since it uses as much as digits as its factorization.

10216432661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 10216432661 its reverse (16623461201), we get a palindrome (26839893862).

The spelling of 10216432661 in words is "ten billion, two hundred sixteen million, four hundred thirty-two thousand, six hundred sixty-one".