645346303643546 has 8 divisors (see below), whose sum is σ = 968909997745920. Its totient is φ = 322376304394908.

The previous prime is 645346303643527. The next prime is 645346303643557.

645346303643546 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148423710716 + ... + 148423715063.

It is an arithmetic number, because the mean of its divisors is an integer number (121113749718240).

Almost surely, 2^{645346303643546} is an apocalyptic number.

645346303643546 is a deficient number, since it is larger than the sum of its proper divisors (323563694102374).

645346303643546 is a wasteful number, since it uses less digits than its factorization.

645346303643546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296847426868.

The product of its (nonzero) digits is 671846400, while the sum is 62.

The spelling of 645346303643546 in words is "six hundred forty-five trillion, three hundred forty-six billion, three hundred three million, six hundred forty-three thousand, five hundred forty-six".