7666542127 has 2 divisors, whose sum is σ = 7666542128. Its totient is φ = 7666542126.

The previous prime is 7666542101. The next prime is 7666542131. The reversal of 7666542127 is 7212456667.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7666542127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7666542227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3833271063 + 3833271064.

It is an arithmetic number, because the mean of its divisors is an integer number (3833271064).

Almost surely, 2^7666542127 is an apocalyptic number.

7666542127 is a deficient number, since it is larger than the sum of its proper divisors (1).

7666542127 is an equidigital number, since it uses as much as digits as its factorization.

7666542127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 46.

The square root of 7666542127 is about 87558.7924025908. The cubic root of 7666542127 is about 1971.8165561885.

The spelling of 7666542127 in words is "seven billion, six hundred sixty-six million, five hundred forty-two thousand, one hundred twenty-seven".