240112664431261 has 4 divisors (see below), whose sum is σ = 240113241820800. Its totient is φ = 240112087041724.

The previous prime is 240112664431247. The next prime is 240112664431361. The reversal of 240112664431261 is 162134466211042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240112664431261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240112664431361) 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, 288070531 + ... + 288902848.

It is an arithmetic number, because the mean of its divisors is an integer number (60028310455200).

Almost surely, 2^{240112664431261} is an apocalyptic number.

It is an amenable number.

240112664431261 is a deficient number, since it is larger than the sum of its proper divisors (577389539).

240112664431261 is an equidigital number, since it uses as much as digits as its factorization.

240112664431261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577389538.

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 240112664431261 in words is "two hundred forty trillion, one hundred twelve billion, six hundred sixty-four million, four hundred thirty-one thousand, two hundred sixty-one".