240283977217 has 4 divisors (see below), whose sum is σ = 254418328836. Its totient is φ = 226149625600.

The previous prime is 240283977211. The next prime is 240283977221. The reversal of 240283977217 is 712779382042.

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

It can be written as a sum of positive squares in 2 ways, for example, as 148416792001 + 91867185216 = 385249^2 + 303096^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240283977217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240283977211) 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, 7067175784 + ... + 7067175817.

It is an arithmetic number, because the mean of its divisors is an integer number (63604582209).

Almost surely, 2^240283977217 is an apocalyptic number.

It is an amenable number.

240283977217 is a deficient number, since it is larger than the sum of its proper divisors (14134351619).

240283977217 is a wasteful number, since it uses less digits than its factorization.

240283977217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14134351618.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 240283977217 in words is "two hundred forty billion, two hundred eighty-three million, nine hundred seventy-seven thousand, two hundred seventeen".