63278610434617 has 2 divisors, whose sum is σ = 63278610434618. Its totient is φ = 63278610434616.

The previous prime is 63278610434609. The next prime is 63278610434723. The reversal of 63278610434617 is 71643401687236.

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., 49150251004176 + 14128359430441 = 7010724^2 + 3758771^2 .

It is a cyclic number.

It is not a de Polignac number, because 63278610434617 - 2³ = 63278610434609 is a prime.

It is not a weakly prime, because it can be changed into another prime (63278610404617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31639305217308 + 31639305217309.

It is an arithmetic number, because the mean of its divisors is an integer number (31639305217309).

Almost surely, 2^{63278610434617} is an apocalyptic number.

It is an amenable number.

63278610434617 is a deficient number, since it is larger than the sum of its proper divisors (1).

63278610434617 is an equidigital number, since it uses as much as digits as its factorization.

63278610434617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24385536, while the sum is 58.

The spelling of 63278610434617 in words is "sixty-three trillion, two hundred seventy-eight billion, six hundred ten million, four hundred thirty-four thousand, six hundred seventeen".