645815606348 has 24 divisors (see below), whose sum is σ = 1235391528000. Its totient is φ = 292964256720.

The previous prime is 645815606309. The next prime is 645815606363. The reversal of 645815606348 is 843606518546.

It is a junction number, because it is equal to n+sod(n) for n = 645815606293 and 645815606302.

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 7 ways as a sum of consecutive naturals, for example, 14685086 + ... + 14728997.

It is an arithmetic number, because the mean of its divisors is an integer number (51474647000).

Almost surely, 2^645815606348 is an apocalyptic number.

It is an amenable number.

645815606348 is a deficient number, since it is larger than the sum of its proper divisors (589575921652).

645815606348 is a wasteful number, since it uses less digits than its factorization.

645815606348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29414597 (or 29414595 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 56.

The spelling of 645815606348 in words is "six hundred forty-five billion, eight hundred fifteen million, six hundred six thousand, three hundred forty-eight".