63219450939 has 4 divisors (see below), whose sum is σ = 84292601256. Its totient is φ = 42146300624.

The previous prime is 63219450919. The next prime is 63219450953. The reversal of 63219450939 is 93905491236.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63219450939 - 2⁸ = 63219450683 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63219450891 and 63219450900.

It is not an unprimeable number, because it can be changed into a prime (63219450919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10536575154 + ... + 10536575159.

It is an arithmetic number, because the mean of its divisors is an integer number (21073150314).

Almost surely, 2^63219450939 is an apocalyptic number.

63219450939 is a deficient number, since it is larger than the sum of its proper divisors (21073150317).

63219450939 is a wasteful number, since it uses less digits than its factorization.

63219450939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21073150316.

The product of its (nonzero) digits is 1574640, while the sum is 51.

The spelling of 63219450939 in words is "sixty-three billion, two hundred nineteen million, four hundred fifty thousand, nine hundred thirty-nine".