1617085539247 has 2 divisors, whose sum is σ = 1617085539248. Its totient is φ = 1617085539246.

The previous prime is 1617085539217. The next prime is 1617085539263. The reversal of 1617085539247 is 7429355807161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1617085539247 - 2¹⁵ = 1617085506479 is a prime.

It is a super-2 number, since 2×1617085539247² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1617085539191 and 1617085539200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1617085539217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808542769623 + 808542769624.

It is an arithmetic number, because the mean of its divisors is an integer number (808542769624).

It is a 1-persistent number, because it is pandigital, but 2⋅1617085539247 = 3234171078494 is not.

Almost surely, 2^{1617085539247} is an apocalyptic number.

1617085539247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1617085539247 is an equidigital number, since it uses as much as digits as its factorization.

1617085539247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 1617085539247 in words is "one trillion, six hundred seventeen billion, eighty-five million, five hundred thirty-nine thousand, two hundred forty-seven".