1066516651 has 2 divisors, whose sum is σ = 1066516652. Its totient is φ = 1066516650.

The previous prime is 1066516643. The next prime is 1066516657. The reversal of 1066516651 is 1566156601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1066516651 - 2³ = 1066516643 is a prime.

It is a super-2 number, since 2×1066516651² = 2274915533720511602, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1066516651.

It is not a weakly prime, because it can be changed into another prime (1066516657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533258325 + 533258326.

It is an arithmetic number, because the mean of its divisors is an integer number (533258326).

Almost surely, 2^1066516651 is an apocalyptic number.

1066516651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066516651 is an equidigital number, since it uses as much as digits as its factorization.

1066516651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 1066516651 is about 32657.5665198741. The cubic root of 1066516651 is about 1021.6980082706.

The spelling of 1066516651 in words is "one billion, sixty-six million, five hundred sixteen thousand, six hundred fifty-one".