66113143 has 2 divisors, whose sum is σ = 66113144. Its totient is φ = 66113142.

The previous prime is 66113137. The next prime is 66113147. The reversal of 66113143 is 34131166.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66113143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66113147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33056571 + 33056572.

It is an arithmetic number, because the mean of its divisors is an integer number (33056572).

Almost surely, 2^66113143 is an apocalyptic number.

66113143 is a deficient number, since it is larger than the sum of its proper divisors (1).

66113143 is an equidigital number, since it uses as much as digits as its factorization.

66113143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

The square root of 66113143 is about 8130.9988931250. The cubic root of 66113143 is about 404.3547985213.

The spelling of 66113143 in words is "sixty-six million, one hundred thirteen thousand, one hundred forty-three".