240484020657 has 4 divisors (see below), whose sum is σ = 320645360880. Its totient is φ = 160322680436.

The previous prime is 240484020641. The next prime is 240484020691. The reversal of 240484020657 is 756020484042.

It is a happy number.

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 not a de Polignac number, because 240484020657 - 2⁴ = 240484020641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240484020157) 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, 40080670107 + ... + 40080670112.

It is an arithmetic number, because the mean of its divisors is an integer number (80161340220).

Almost surely, 2^240484020657 is an apocalyptic number.

It is an amenable number.

240484020657 is a deficient number, since it is larger than the sum of its proper divisors (80161340223).

240484020657 is an equidigital number, since it uses as much as digits as its factorization.

240484020657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80161340222.

The product of its (nonzero) digits is 430080, while the sum is 42.

The spelling of 240484020657 in words is "two hundred forty billion, four hundred eighty-four million, twenty thousand, six hundred fifty-seven".