243145551504 has 40 divisors (see below), whose sum is σ = 645102391360. Its totient is φ = 78858016128.

The previous prime is 243145551499. The next prime is 243145551533. The reversal of 243145551504 is 405155541342.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68451364 + ... + 68454915.

It is an arithmetic number, because the mean of its divisors is an integer number (16127559784).

Almost surely, 2^243145551504 is an apocalyptic number.

243145551504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

243145551504 is an abundant number, since it is smaller than the sum of its proper divisors (401956839856).

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

243145551504 is a wasteful number, since it uses less digits than its factorization.

243145551504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136906327 (or 136906321 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 39.

The spelling of 243145551504 in words is "two hundred forty-three billion, one hundred forty-five million, five hundred fifty-one thousand, five hundred four".