63430005491 has 2 divisors, whose sum is σ = 63430005492. Its totient is φ = 63430005490.

The previous prime is 63430005469. The next prime is 63430005503. The reversal of 63430005491 is 19450003436.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63430005491 - 2¹⁸ = 63429743347 is a prime.

It is not a weakly prime, because it can be changed into another prime (63430005461) 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, 31715002745 + 31715002746.

It is an arithmetic number, because the mean of its divisors is an integer number (31715002746).

Almost surely, 2^63430005491 is an apocalyptic number.

63430005491 is a deficient number, since it is larger than the sum of its proper divisors (1).

63430005491 is an equidigital number, since it uses as much as digits as its factorization.

63430005491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 63430005491 in words is "sixty-three billion, four hundred thirty million, five thousand, four hundred ninety-one".