243879807494 has 16 divisors (see below), whose sum is σ = 368169230448. Its totient is φ = 121157158752.

The previous prime is 243879807433. The next prime is 243879807499. The reversal of 243879807494 is 494708978342.

It is a self number, because there is not a number n which added to its sum of digits gives 243879807494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243879807499) 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, 1054424 + ... + 1264740.

It is an arithmetic number, because the mean of its divisors is an integer number (23010576903).

Almost surely, 2^243879807494 is an apocalyptic number.

243879807494 is a deficient number, since it is larger than the sum of its proper divisors (124289422954).

243879807494 is a wasteful number, since it uses less digits than its factorization.

243879807494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214039.

The product of its (nonzero) digits is 97542144, while the sum is 65.

The spelling of 243879807494 in words is "two hundred forty-three billion, eight hundred seventy-nine million, eight hundred seven thousand, four hundred ninety-four".