663424045125577 has 2 divisors, whose sum is σ = 663424045125578. Its totient is φ = 663424045125576.

The previous prime is 663424045125559. The next prime is 663424045125791. The reversal of 663424045125577 is 775521540424366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 662468374648521 + 955670477056 = 25738461^2 + 977584^2 .

It is a cyclic number.

It is not a de Polignac number, because 663424045125577 - 2³¹ = 663421897641929 is a prime.

It is a super-2 number, since 2×663424045125577² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (663424045125557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331712022562788 + 331712022562789.

It is an arithmetic number, because the mean of its divisors is an integer number (331712022562789).

Almost surely, 2^{663424045125577} is an apocalyptic number.

It is an amenable number.

663424045125577 is a deficient number, since it is larger than the sum of its proper divisors (1).

663424045125577 is an equidigital number, since it uses as much as digits as its factorization.

663424045125577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344000, while the sum is 61.

The spelling of 663424045125577 in words is "six hundred sixty-three trillion, four hundred twenty-four billion, forty-five million, one hundred twenty-five thousand, five hundred seventy-seven".