240643568697 has 32 divisors (see below), whose sum is σ = 401653728000. Its totient is φ = 124958926848.

The previous prime is 240643568609. The next prime is 240643568723. The reversal of 240643568697 is 796865346042.

240643568697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 240643568697 - 2⁸ = 240643568441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240643568697.

It is not an unprimeable number, because it can be changed into a prime (240643568597) 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 31 ways as a sum of consecutive naturals, for example, 11611572 + ... + 11632277.

It is an arithmetic number, because the mean of its divisors is an integer number (12551679000).

Almost surely, 2^240643568697 is an apocalyptic number.

It is an amenable number.

240643568697 is a deficient number, since it is larger than the sum of its proper divisors (161010159303).

240643568697 is a wasteful number, since it uses less digits than its factorization.

240643568697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23243905.

The product of its (nonzero) digits is 52254720, while the sum is 60.

The spelling of 240643568697 in words is "two hundred forty billion, six hundred forty-three million, five hundred sixty-eight thousand, six hundred ninety-seven".