4240520636251 has 2 divisors, whose sum is σ = 4240520636252. Its totient is φ = 4240520636250.

The previous prime is 4240520636227. The next prime is 4240520636333. The reversal of 4240520636251 is 1526360250424.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4240520636251 - 2¹³ = 4240520628059 is a prime.

It is not a weakly prime, because it can be changed into another prime (4240520676251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2120260318125 + 2120260318126.

It is an arithmetic number, because the mean of its divisors is an integer number (2120260318126).

Almost surely, 2^{4240520636251} is an apocalyptic number.

4240520636251 is a deficient number, since it is larger than the sum of its proper divisors (1).

4240520636251 is an equidigital number, since it uses as much as digits as its factorization.

4240520636251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 4240520636251 its reverse (1526360250424), we get a palindrome (5766880886675).

The spelling of 4240520636251 in words is "four trillion, two hundred forty billion, five hundred twenty million, six hundred thirty-six thousand, two hundred fifty-one".