243005320164 has 36 divisors (see below), whose sum is σ = 571374277712. Its totient is φ = 80383371120.

The previous prime is 243005320141. The next prime is 243005320223. The reversal of 243005320164 is 461023500342.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384082 + ... + 795945.

Almost surely, 2^243005320164 is an apocalyptic number.

It is an amenable number.

243005320164 is an abundant number, since it is smaller than the sum of its proper divisors (328368957548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243005320164 is a wasteful number, since it uses less digits than its factorization.

243005320164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180296 (or 1180163 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The spelling of 243005320164 in words is "two hundred forty-three billion, five million, three hundred twenty thousand, one hundred sixty-four".