66055126331 has 2 divisors, whose sum is σ = 66055126332. Its totient is φ = 66055126330.

The previous prime is 66055126327. The next prime is 66055126369. The reversal of 66055126331 is 13362155066.

It is an a-pointer prime, because the next prime (66055126369) can be obtained adding 66055126331 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66055126331 - 2² = 66055126327 is a prime.

It is a super-2 number, since 2×66055126331² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66055126031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33027563165 + 33027563166.

It is an arithmetic number, because the mean of its divisors is an integer number (33027563166).

Almost surely, 2^66055126331 is an apocalyptic number.

66055126331 is a deficient number, since it is larger than the sum of its proper divisors (1).

66055126331 is an equidigital number, since it uses as much as digits as its factorization.

66055126331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 66055126331 in words is "sixty-six billion, fifty-five million, one hundred twenty-six thousand, three hundred thirty-one".