66480488441 has 2 divisors, whose sum is σ = 66480488442. Its totient is φ = 66480488440.

The previous prime is 66480488381. The next prime is 66480488471. The reversal of 66480488441 is 14488408466.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66313975225 + 166513216 = 257515^2 + 12904^2 .

It is a cyclic number.

It is not a de Polignac number, because 66480488441 - 2¹⁴ = 66480472057 is a prime.

It is a super-2 number, since 2×66480488441² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66480488471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33240244220 + 33240244221.

It is an arithmetic number, because the mean of its divisors is an integer number (33240244221).

Almost surely, 2^66480488441 is an apocalyptic number.

It is an amenable number.

66480488441 is a deficient number, since it is larger than the sum of its proper divisors (1).

66480488441 is an equidigital number, since it uses as much as digits as its factorization.

66480488441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4718592, while the sum is 53.

The spelling of 66480488441 in words is "sixty-six billion, four hundred eighty million, four hundred eighty-eight thousand, four hundred forty-one".