66153419 has 2 divisors, whose sum is σ = 66153420. Its totient is φ = 66153418.

The previous prime is 66153413. The next prime is 66153427. The reversal of 66153419 is 91435166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66153419 - 2¹² = 66149323 is a prime.

It is a super-2 number, since 2×66153419² = 8752549690779122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66153413) 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, 33076709 + 33076710.

It is an arithmetic number, because the mean of its divisors is an integer number (33076710).

Almost surely, 2^66153419 is an apocalyptic number.

66153419 is a deficient number, since it is larger than the sum of its proper divisors (1).

66153419 is an equidigital number, since it uses as much as digits as its factorization.

66153419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 35.

The square root of 66153419 is about 8133.4752105112. The cubic root of 66153419 is about 404.4368925758.

The spelling of 66153419 in words is "sixty-six million, one hundred fifty-three thousand, four hundred nineteen".