63297440641 has 2 divisors, whose sum is σ = 63297440642. Its totient is φ = 63297440640.

The previous prime is 63297440623. The next prime is 63297440681. The reversal of 63297440641 is 14604479236.

63297440641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45819543025 + 17477897616 = 214055^2 + 132204^2 .

It is a cyclic number.

It is not a de Polignac number, because 63297440641 - 2²⁵ = 63263886209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63297440591 and 63297440600.

It is not a weakly prime, because it can be changed into another prime (63297440681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31648720320 + 31648720321.

It is an arithmetic number, because the mean of its divisors is an integer number (31648720321).

Almost surely, 2^63297440641 is an apocalyptic number.

It is an amenable number.

63297440641 is a deficient number, since it is larger than the sum of its proper divisors (1).

63297440641 is an equidigital number, since it uses as much as digits as its factorization.

63297440641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 63297440641 in words is "sixty-three billion, two hundred ninety-seven million, four hundred forty thousand, six hundred forty-one".