16512166651 has 2 divisors, whose sum is σ = 16512166652. Its totient is φ = 16512166650.

The previous prime is 16512166633. The next prime is 16512166663. The reversal of 16512166651 is 15666121561.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16512166651 is a prime.

It is not a weakly prime, because it can be changed into another prime (16512166621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8256083325 + 8256083326.

It is an arithmetic number, because the mean of its divisors is an integer number (8256083326).

Almost surely, 2^16512166651 is an apocalyptic number.

16512166651 is a deficient number, since it is larger than the sum of its proper divisors (1).

16512166651 is an equidigital number, since it uses as much as digits as its factorization.

16512166651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 40.

The spelling of 16512166651 in words is "sixteen billion, five hundred twelve million, one hundred sixty-six thousand, six hundred fifty-one".