240404635566643 has 4 divisors (see below), whose sum is σ = 254546084717640. Its totient is φ = 226263186415648.

The previous prime is 240404635566607. The next prime is 240404635566647. The reversal of 240404635566643 is 346665536404042.

It is a happy number.

240404635566643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240404635566643 - 2¹⁷ = 240404635435571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240404635566647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7070724575473 + ... + 7070724575506.

It is an arithmetic number, because the mean of its divisors is an integer number (63636521179410).

Almost surely, 2^{240404635566643} is an apocalyptic number.

240404635566643 is a deficient number, since it is larger than the sum of its proper divisors (14141449150997).

240404635566643 is a wasteful number, since it uses less digits than its factorization.

240404635566643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14141449150996.

The product of its (nonzero) digits is 149299200, while the sum is 58.

The spelling of 240404635566643 in words is "two hundred forty trillion, four hundred four billion, six hundred thirty-five million, five hundred sixty-six thousand, six hundred forty-three".