245303404817 has 2 divisors, whose sum is σ = 245303404818. Its totient is φ = 245303404816.

The previous prime is 245303404807. The next prime is 245303404939. The reversal of 245303404817 is 718404303542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159609039121 + 85694365696 = 399511^2 + 292736^2 .

It is a cyclic number.

It is not a de Polignac number, because 245303404817 - 2¹⁸ = 245303142673 is a prime.

It is a super-3 number, since 3×245303404817³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (245303404807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122651702408 + 122651702409.

It is an arithmetic number, because the mean of its divisors is an integer number (122651702409).

Almost surely, 2^245303404817 is an apocalyptic number.

It is an amenable number.

245303404817 is a deficient number, since it is larger than the sum of its proper divisors (1).

245303404817 is an equidigital number, since it uses as much as digits as its factorization.

245303404817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 245303404817 in words is "two hundred forty-five billion, three hundred three million, four hundred four thousand, eight hundred seventeen".