63173428343 has 4 divisors (see below), whose sum is σ = 63188258568. Its totient is φ = 63158598120.

The previous prime is 63173428321. The next prime is 63173428379. The reversal of 63173428343 is 34382437136.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63173428343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63173428294 and 63173428303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63173428393) 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, 7408721 + ... + 7417242.

It is an arithmetic number, because the mean of its divisors is an integer number (15797064642).

Almost surely, 2^63173428343 is an apocalyptic number.

63173428343 is a deficient number, since it is larger than the sum of its proper divisors (14830225).

63173428343 is a wasteful number, since it uses less digits than its factorization.

63173428343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14830224.

The product of its digits is 870912, while the sum is 44.

The spelling of 63173428343 in words is "sixty-three billion, one hundred seventy-three million, four hundred twenty-eight thousand, three hundred forty-three".