243654954864 has 20 divisors (see below), whose sum is σ = 629441966856. Its totient is φ = 81218318272.

The previous prime is 243654954863. The next prime is 243654954869. The reversal of 243654954864 is 468459456342.

It is a junction number, because it is equal to n+sod(n) for n = 243654954798 and 243654954807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243654954863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2538072399 + ... + 2538072494.

Almost surely, 2^243654954864 is an apocalyptic number.

243654954864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

243654954864 is an abundant number, since it is smaller than the sum of its proper divisors (385787011992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243654954864 is a wasteful number, since it uses less digits than its factorization.

243654954864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076144904 (or 5076144898 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 60.

The spelling of 243654954864 in words is "two hundred forty-three billion, six hundred fifty-four million, nine hundred fifty-four thousand, eight hundred sixty-four".