645350366210 has 32 divisors (see below), whose sum is σ = 1276350264000. Its totient is φ = 232984560960.

The previous prime is 645350366201. The next prime is 645350366237. The reversal of 645350366210 is 12663053546.

It is a super-2 number, since 2×645350366210² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21088385 + ... + 21118964.

It is an arithmetic number, because the mean of its divisors is an integer number (39885945750).

Almost surely, 2^645350366210 is an apocalyptic number.

645350366210 is a deficient number, since it is larger than the sum of its proper divisors (630999897790).

645350366210 is a wasteful number, since it uses less digits than its factorization.

645350366210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42207506.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 645350366210 in words is "six hundred forty-five billion, three hundred fifty million, three hundred sixty-six thousand, two hundred ten".