243656447130 has 48 divisors (see below), whose sum is σ = 642962103264. Its totient is φ = 64005274080.

The previous prime is 243656447117. The next prime is 243656447131. The reversal of 243656447130 is 31744656342.

243656447130 is a `hidden beast` number, since 2 + 4 + 36 + 564 + 47 + 13 + 0 = 666.

243656447130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (243656447131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20197656 + ... + 20209715.

It is an arithmetic number, because the mean of its divisors is an integer number (13395043818).

Almost surely, 2^243656447130 is an apocalyptic number.

243656447130 is an abundant number, since it is smaller than the sum of its proper divisors (399305656134).

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

243656447130 is a wasteful number, since it uses less digits than its factorization.

243656447130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40407451 (or 40407448 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 45.

The spelling of 243656447130 in words is "two hundred forty-three billion, six hundred fifty-six million, four hundred forty-seven thousand, one hundred thirty".