16606066651 has 2 divisors, whose sum is σ = 16606066652. Its totient is φ = 16606066650.

The previous prime is 16606066643. The next prime is 16606066657. The reversal of 16606066651 is 15666060661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16606066651 - 2³ = 16606066643 is a prime.

It is a super-2 number, since 2×16606066651² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16606066598 and 16606066607.

It is not a weakly prime, because it can be changed into another prime (16606066657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8303033325 + 8303033326.

It is an arithmetic number, because the mean of its divisors is an integer number (8303033326).

Almost surely, 2^16606066651 is an apocalyptic number.

16606066651 is a deficient number, since it is larger than the sum of its proper divisors (1).

16606066651 is an equidigital number, since it uses as much as digits as its factorization.

16606066651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 16606066651 in words is "sixteen billion, six hundred six million, sixty-six thousand, six hundred fifty-one".