63431586487 has 2 divisors, whose sum is σ = 63431586488. Its totient is φ = 63431586486.

The previous prime is 63431586461. The next prime is 63431586521. The reversal of 63431586487 is 78468513436.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63431586487 is a prime.

It is a super-2 number, since 2×63431586487² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63431583487) 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, 31715793243 + 31715793244.

It is an arithmetic number, because the mean of its divisors is an integer number (31715793244).

Almost surely, 2^63431586487 is an apocalyptic number.

63431586487 is a deficient number, since it is larger than the sum of its proper divisors (1).

63431586487 is an equidigital number, since it uses as much as digits as its factorization.

63431586487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11612160, while the sum is 55.

The spelling of 63431586487 in words is "sixty-three billion, four hundred thirty-one million, five hundred eighty-six thousand, four hundred eighty-seven".