243733641672 has 16 divisors (see below), whose sum is σ = 609334104240. Its totient is φ = 81244547216.

The previous prime is 243733641623. The next prime is 243733641689. The reversal of 243733641672 is 276146337342.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5077784178 + ... + 5077784225.

It is an arithmetic number, because the mean of its divisors is an integer number (38083381515).

Almost surely, 2^243733641672 is an apocalyptic number.

It is an amenable number.

243733641672 is an abundant number, since it is smaller than the sum of its proper divisors (365600462568).

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

243733641672 is a wasteful number, since it uses less digits than its factorization.

243733641672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10155568412 (or 10155568408 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 48.

The spelling of 243733641672 in words is "two hundred forty-three billion, seven hundred thirty-three million, six hundred forty-one thousand, six hundred seventy-two".