63347398919 has 4 divisors (see below), whose sum is σ = 72397027344. Its totient is φ = 54297770496.

The previous prime is 63347398909. The next prime is 63347398921. The reversal of 63347398919 is 91989374336.

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 63347398919 - 2¹⁶ = 63347333383 is a prime.

It is a super-2 number, since 2×63347398919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63347398909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4524814202 + ... + 4524814215.

It is an arithmetic number, because the mean of its divisors is an integer number (18099256836).

Almost surely, 2^63347398919 is an apocalyptic number.

63347398919 is a deficient number, since it is larger than the sum of its proper divisors (9049628425).

63347398919 is an equidigital number, since it uses as much as digits as its factorization.

63347398919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9049628424.

The product of its digits is 26453952, while the sum is 62.

The spelling of 63347398919 in words is "sixty-three billion, three hundred forty-seven million, three hundred ninety-eight thousand, nine hundred nineteen".