63906273947 has 2 divisors, whose sum is σ = 63906273948. Its totient is φ = 63906273946.

The previous prime is 63906273863. The next prime is 63906274001. The reversal of 63906273947 is 74937260936.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63906273947 - 2¹⁴ = 63906257563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63906273892 and 63906273901.

It is not a weakly prime, because it can be changed into another prime (63906273247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31953136973 + 31953136974.

It is an arithmetic number, because the mean of its divisors is an integer number (31953136974).

Almost surely, 2^63906273947 is an apocalyptic number.

63906273947 is a deficient number, since it is larger than the sum of its proper divisors (1).

63906273947 is an equidigital number, since it uses as much as digits as its factorization.

63906273947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10287648, while the sum is 56.

The spelling of 63906273947 in words is "sixty-three billion, nine hundred six million, two hundred seventy-three thousand, nine hundred forty-seven".