66024213469 has 2 divisors, whose sum is σ = 66024213470. Its totient is φ = 66024213468.

The previous prime is 66024213467. The next prime is 66024213487. The reversal of 66024213469 is 96431242066.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64389062500 + 1635150969 = 253750^2 + 40437^2 .

It is a cyclic number.

It is not a de Polignac number, because 66024213469 - 2¹ = 66024213467 is a prime.

It is a super-2 number, since 2×66024213469² (a number of 22 digits) contains 22 as substring.

Together with 66024213467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66024213467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33012106734 + 33012106735.

It is an arithmetic number, because the mean of its divisors is an integer number (33012106735).

Almost surely, 2^66024213469 is an apocalyptic number.

It is an amenable number.

66024213469 is a deficient number, since it is larger than the sum of its proper divisors (1).

66024213469 is an equidigital number, since it uses as much as digits as its factorization.

66024213469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 66024213469 in words is "sixty-six billion, twenty-four million, two hundred thirteen thousand, four hundred sixty-nine".