27517520449 has 2 divisors, whose sum is σ = 27517520450. Its totient is φ = 27517520448.

The previous prime is 27517520417. The next prime is 27517520461. The reversal of 27517520449 is 94402571572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25493870224 + 2023650225 = 159668^2 + 44985^2 .

It is a cyclic number.

It is not a de Polignac number, because 27517520449 - 2⁵ = 27517520417 is a prime.

It is a super-2 number, since 2×27517520449² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27517520399 and 27517520408.

It is not a weakly prime, because it can be changed into another prime (27517520249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13758760224 + 13758760225.

It is an arithmetic number, because the mean of its divisors is an integer number (13758760225).

Almost surely, 2^27517520449 is an apocalyptic number.

It is an amenable number.

27517520449 is a deficient number, since it is larger than the sum of its proper divisors (1).

27517520449 is an equidigital number, since it uses as much as digits as its factorization.

27517520449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 27517520449 in words is "twenty-seven billion, five hundred seventeen million, five hundred twenty thousand, four hundred forty-nine".