63512474989 has 2 divisors, whose sum is σ = 63512474990. Its totient is φ = 63512474988.

The previous prime is 63512474969. The next prime is 63512475043. The reversal of 63512474989 is 98947421536.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36732788964 + 26779686025 = 191658^2 + 163645^2 .

It is a cyclic number.

It is not a de Polignac number, because 63512474989 - 2²¹ = 63510377837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63512474969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31756237494 + 31756237495.

It is an arithmetic number, because the mean of its divisors is an integer number (31756237495).

Almost surely, 2^63512474989 is an apocalyptic number.

It is an amenable number.

63512474989 is a deficient number, since it is larger than the sum of its proper divisors (1).

63512474989 is an equidigital number, since it uses as much as digits as its factorization.

63512474989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 58.

The spelling of 63512474989 in words is "sixty-three billion, five hundred twelve million, four hundred seventy-four thousand, nine hundred eighty-nine".