428265037217 has 2 divisors, whose sum is σ = 428265037218. Its totient is φ = 428265037216.

The previous prime is 428265037201. The next prime is 428265037241. The reversal of 428265037217 is 712730562824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 329520773521 + 98744263696 = 574039^2 + 314236^2 .

It is a cyclic number.

It is not a de Polignac number, because 428265037217 - 2⁴ = 428265037201 is a prime.

It is not a weakly prime, because it can be changed into another prime (428265037117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214132518608 + 214132518609.

It is an arithmetic number, because the mean of its divisors is an integer number (214132518609).

Almost surely, 2^428265037217 is an apocalyptic number.

It is an amenable number.

428265037217 is a deficient number, since it is larger than the sum of its proper divisors (1).

428265037217 is an equidigital number, since it uses as much as digits as its factorization.

428265037217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 428265037217 in words is "four hundred twenty-eight billion, two hundred sixty-five million, thirty-seven thousand, two hundred seventeen".