243231560655 has 16 divisors (see below), whose sum is σ = 402590170080. Its totient is φ = 125250274688.

The previous prime is 243231560641. The next prime is 243231560669. The reversal of 243231560655 is 556065132342.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (243231560641) and next prime (243231560669).

It is a cyclic number.

It is not a de Polignac number, because 243231560655 - 2⁴ = 243231560639 is a prime.

It is a congruent number.

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, 279576072 + ... + 279576941.

It is an arithmetic number, because the mean of its divisors is an integer number (25161885630).

Almost surely, 2^243231560655 is an apocalyptic number.

243231560655 is a deficient number, since it is larger than the sum of its proper divisors (159358609425).

243231560655 is a wasteful number, since it uses less digits than its factorization.

243231560655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559153050.

The product of its (nonzero) digits is 648000, while the sum is 42.

Adding to 243231560655 its reverse (556065132342), we get a palindrome (799296692997).

The spelling of 243231560655 in words is "two hundred forty-three billion, two hundred thirty-one million, five hundred sixty thousand, six hundred fifty-five".