63128551919 has 2 divisors, whose sum is σ = 63128551920. Its totient is φ = 63128551918.

The previous prime is 63128551891. The next prime is 63128551979. The reversal of 63128551919 is 91915582136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63128551919 - 2¹⁶ = 63128486383 is a prime.

It is a super-2 number, since 2×63128551919² (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 (63128551979) 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, 31564275959 + 31564275960.

It is an arithmetic number, because the mean of its divisors is an integer number (31564275960).

Almost surely, 2^63128551919 is an apocalyptic number.

63128551919 is a deficient number, since it is larger than the sum of its proper divisors (1).

63128551919 is an equidigital number, since it uses as much as digits as its factorization.

63128551919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 50.

The spelling of 63128551919 in words is "sixty-three billion, one hundred twenty-eight million, five hundred fifty-one thousand, nine hundred nineteen".