5666611651 has 2 divisors, whose sum is σ = 5666611652. Its totient is φ = 5666611650.

The previous prime is 5666611627. The next prime is 5666611663. The reversal of 5666611651 is 1561166665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5666611651 - 2⁷ = 5666611523 is a prime.

It is a super-2 number, since 2×5666611651² = 64220975206497891602, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5666611598 and 5666611607.

It is not a weakly prime, because it can be changed into another prime (5666651651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2833305825 + 2833305826.

It is an arithmetic number, because the mean of its divisors is an integer number (2833305826).

Almost surely, 2^5666611651 is an apocalyptic number.

5666611651 is a deficient number, since it is larger than the sum of its proper divisors (1).

5666611651 is an equidigital number, since it uses as much as digits as its factorization.

5666611651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 43.

The square root of 5666611651 is about 75276.8998498211. The cubic root of 5666611651 is about 1782.8213107815.

The spelling of 5666611651 in words is "five billion, six hundred sixty-six million, six hundred eleven thousand, six hundred fifty-one".