243987343473 has 8 divisors (see below), whose sum is σ = 325319370336. Its totient is φ = 162656772800.

The previous prime is 243987343433. The next prime is 243987343493. The reversal of 243987343473 is 374343789342.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243987343473 - 2⁶ = 243987343409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243987343433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118153 + ... + 708473.

It is an arithmetic number, because the mean of its divisors is an integer number (40664921292).

Almost surely, 2^243987343473 is an apocalyptic number.

It is an amenable number.

243987343473 is a deficient number, since it is larger than the sum of its proper divisors (81332026863).

243987343473 is a wasteful number, since it uses less digits than its factorization.

243987343473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728095.

The product of its digits is 36578304, while the sum is 57.

The spelling of 243987343473 in words is "two hundred forty-three billion, nine hundred eighty-seven million, three hundred forty-three thousand, four hundred seventy-three".