243688654435 has 16 divisors (see below), whose sum is σ = 292738263552. Its totient is φ = 194743116000.

The previous prime is 243688654357. The next prime is 243688654457. The reversal of 243688654435 is 534456886342.

It is a happy number.

It is not a de Polignac number, because 243688654435 - 2¹⁵ = 243688621667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243688654435.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28899670 + ... + 28908100.

It is an arithmetic number, because the mean of its divisors is an integer number (18296141472).

Almost surely, 2^243688654435 is an apocalyptic number.

243688654435 is a deficient number, since it is larger than the sum of its proper divisors (49049609117).

243688654435 is a wasteful number, since it uses less digits than its factorization.

243688654435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13914.

The product of its digits is 66355200, while the sum is 58.

The spelling of 243688654435 in words is "two hundred forty-three billion, six hundred eighty-eight million, six hundred fifty-four thousand, four hundred thirty-five".