63309974345 has 16 divisors (see below), whose sum is σ = 76589107200. Its totient is φ = 50236752384.

The previous prime is 63309974323. The next prime is 63309974437. The reversal of 63309974345 is 54347990336.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 63309974345 - 2⁶ = 63309974281 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 3228089 + ... + 3247641.

It is an arithmetic number, because the mean of its divisors is an integer number (4786819200).

Almost surely, 2^63309974345 is an apocalyptic number.

It is an amenable number.

63309974345 is a deficient number, since it is larger than the sum of its proper divisors (13279132855).

63309974345 is a wasteful number, since it uses less digits than its factorization.

63309974345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24784.

The product of its (nonzero) digits is 7348320, while the sum is 53.

The spelling of 63309974345 in words is "sixty-three billion, three hundred nine million, nine hundred seventy-four thousand, three hundred forty-five".