2440220331257 has 2 divisors, whose sum is σ = 2440220331258. Its totient is φ = 2440220331256.

The previous prime is 2440220331253. The next prime is 2440220331349. The reversal of 2440220331257 is 7521330220442.

2440220331257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2230873819321 + 209346511936 = 1493611^2 + 457544^2 .

It is a cyclic number.

It is not a de Polignac number, because 2440220331257 - 2² = 2440220331253 is a prime.

It is a super-2 number, since 2×2440220331257² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2440220331253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1220110165628 + 1220110165629.

It is an arithmetic number, because the mean of its divisors is an integer number (1220110165629).

Almost surely, 2^{2440220331257} is an apocalyptic number.

It is an amenable number.

2440220331257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2440220331257 is an equidigital number, since it uses as much as digits as its factorization.

2440220331257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 35.

Adding to 2440220331257 its reverse (7521330220442), we get a palindrome (9961550551699).

The spelling of 2440220331257 in words is "two trillion, four hundred forty billion, two hundred twenty million, three hundred thirty-one thousand, two hundred fifty-seven".