1011571650497 has 2 divisors, whose sum is σ = 1011571650498. Its totient is φ = 1011571650496.

The previous prime is 1011571650491. The next prime is 1011571650527. The reversal of 1011571650497 is 7940561751101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 673686374656 + 337885275841 = 820784^2 + 581279^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011571650497 - 2⁶ = 1011571650433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011571650491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505785825248 + 505785825249.

It is an arithmetic number, because the mean of its divisors is an integer number (505785825249).

Almost surely, 2^{1011571650497} is an apocalyptic number.

It is an amenable number.

1011571650497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011571650497 is an equidigital number, since it uses as much as digits as its factorization.

1011571650497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 264600, while the sum is 47.

The spelling of 1011571650497 in words is "one trillion, eleven billion, five hundred seventy-one million, six hundred fifty thousand, four hundred ninety-seven".