243155693446 has 4 divisors (see below), whose sum is σ = 364733540172. Its totient is φ = 121577846722.

The previous prime is 243155693437. The next prime is 243155693453. The reversal of 243155693446 is 644396551342.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 243155693393 and 243155693402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60788923360 + ... + 60788923363.

It is an arithmetic number, because the mean of its divisors is an integer number (91183385043).

Almost surely, 2^243155693446 is an apocalyptic number.

243155693446 is a deficient number, since it is larger than the sum of its proper divisors (121577846726).

243155693446 is a wasteful number, since it uses less digits than its factorization.

243155693446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121577846725.

The product of its digits is 9331200, while the sum is 52.

The spelling of 243155693446 in words is "two hundred forty-three billion, one hundred fifty-five million, six hundred ninety-three thousand, four hundred forty-six".