63816065043947 has 2 divisors, whose sum is σ = 63816065043948. Its totient is φ = 63816065043946.

The previous prime is 63816065043917. The next prime is 63816065044031. The reversal of 63816065043947 is 74934056061836.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63816065043947 - 2³⁰ = 63814991302123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63816065043947.

It is not a weakly prime, because it can be changed into another prime (63816065043917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31908032521973 + 31908032521974.

It is an arithmetic number, because the mean of its divisors is an integer number (31908032521974).

Almost surely, 2^{63816065043947} is an apocalyptic number.

63816065043947 is a deficient number, since it is larger than the sum of its proper divisors (1).

63816065043947 is an equidigital number, since it uses as much as digits as its factorization.

63816065043947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78382080, while the sum is 62.

The spelling of 63816065043947 in words is "sixty-three trillion, eight hundred sixteen billion, sixty-five million, forty-three thousand, nine hundred forty-seven".