7666311043 has 2 divisors, whose sum is σ = 7666311044. Its totient is φ = 7666311042.

The previous prime is 7666311013. The next prime is 7666311049. The reversal of 7666311043 is 3401136667.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7666311043 - 2⁵ = 7666311011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7666310993 and 7666311011.

It is not a weakly prime, because it can be changed into another prime (7666311049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3833155521 + 3833155522.

It is an arithmetic number, because the mean of its divisors is an integer number (3833155522).

Almost surely, 2^7666311043 is an apocalyptic number.

7666311043 is a deficient number, since it is larger than the sum of its proper divisors (1).

7666311043 is an equidigital number, since it uses as much as digits as its factorization.

7666311043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 7666311043 is about 87557.4727992991. The cubic root of 7666311043 is about 1971.7967445695.

It can be divided in two parts, 76663110 and 43, that added together give a triangular number (76663153 = T₁₂₃₈₂).

The spelling of 7666311043 in words is "seven billion, six hundred sixty-six million, three hundred eleven thousand, forty-three".