212645643304 has 32 divisors (see below), whose sum is σ = 399389940000. Its totient is φ = 106141792960.

The previous prime is 212645643289. The next prime is 212645643307. The reversal of 212645643304 is 403346546212.

It is not an unprimeable number, because it can be changed into a prime (212645643307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15745947 + ... + 15759445.

It is an arithmetic number, because the mean of its divisors is an integer number (12480935625).

Almost surely, 2^212645643304 is an apocalyptic number.

It is an amenable number.

212645643304 is a deficient number, since it is larger than the sum of its proper divisors (186744296696).

212645643304 is a wasteful number, since it uses less digits than its factorization.

212645643304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16713 (or 16709 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 212645643304 in words is "two hundred twelve billion, six hundred forty-five million, six hundred forty-three thousand, three hundred four".