1606650056497 has 2 divisors, whose sum is σ = 1606650056498. Its totient is φ = 1606650056496.

The previous prime is 1606650056423. The next prime is 1606650056593. The reversal of 1606650056497 is 7946500566061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1524042099441 + 82607957056 = 1234521^2 + 287416^2 .

It is a cyclic number.

It is not a de Polignac number, because 1606650056497 - 2²³ = 1606641667889 is a prime.

It is a super-2 number, since 2×1606650056497² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1606630056497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803325028248 + 803325028249.

It is an arithmetic number, because the mean of its divisors is an integer number (803325028249).

Almost surely, 2^{1606650056497} is an apocalyptic number.

It is an amenable number.

1606650056497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606650056497 is an equidigital number, since it uses as much as digits as its factorization.

1606650056497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 55.

The spelling of 1606650056497 in words is "one trillion, six hundred six billion, six hundred fifty million, fifty-six thousand, four hundred ninety-seven".