63112578649 has 2 divisors, whose sum is σ = 63112578650. Its totient is φ = 63112578648.

The previous prime is 63112578637. The next prime is 63112578701. The reversal of 63112578649 is 94687521136.

It is an a-pointer prime, because the next prime (63112578701) can be obtained adding 63112578649 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53156530249 + 9956048400 = 230557^2 + 99780^2 .

It is a cyclic number.

It is not a de Polignac number, because 63112578649 - 2¹⁹ = 63112054361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63112578596 and 63112578605.

It is not a weakly prime, because it can be changed into another prime (63112578619) 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, 31556289324 + 31556289325.

It is an arithmetic number, because the mean of its divisors is an integer number (31556289325).

Almost surely, 2^63112578649 is an apocalyptic number.

It is an amenable number.

63112578649 is a deficient number, since it is larger than the sum of its proper divisors (1).

63112578649 is an equidigital number, since it uses as much as digits as its factorization.

63112578649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 52.

The spelling of 63112578649 in words is "sixty-three billion, one hundred twelve million, five hundred seventy-eight thousand, six hundred forty-nine".