243502137326 has 12 divisors (see below), whose sum is σ = 424886382648. Its totient is φ = 104358058812.

The previous prime is 243502137317. The next prime is 243502137349. The reversal of 243502137326 is 623731205342.

It is a self number, because there is not a number n which added to its sum of digits gives 243502137326.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1242357746 + ... + 1242357941.

It is an arithmetic number, because the mean of its divisors is an integer number (35407198554).

Almost surely, 2^243502137326 is an apocalyptic number.

243502137326 is a deficient number, since it is larger than the sum of its proper divisors (181384245322).

243502137326 is a wasteful number, since it uses less digits than its factorization.

243502137326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484715703 (or 2484715696 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 38.

The spelling of 243502137326 in words is "two hundred forty-three billion, five hundred two million, one hundred thirty-seven thousand, three hundred twenty-six".