245437142617 has 2 divisors, whose sum is σ = 245437142618. Its totient is φ = 245437142616.

The previous prime is 245437142603. The next prime is 245437142633. The reversal of 245437142617 is 716241734542.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243867081241 + 1570061376 = 493829^2 + 39624^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245437142617 is a prime.

It is not a weakly prime, because it can be changed into another prime (245437142017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122718571308 + 122718571309.

It is an arithmetic number, because the mean of its divisors is an integer number (122718571309).

Almost surely, 2^245437142617 is an apocalyptic number.

It is an amenable number.

245437142617 is a deficient number, since it is larger than the sum of its proper divisors (1).

245437142617 is an equidigital number, since it uses as much as digits as its factorization.

245437142617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 46.

The spelling of 245437142617 in words is "two hundred forty-five billion, four hundred thirty-seven million, one hundred forty-two thousand, six hundred seventeen".