535557513990649 has 2 divisors, whose sum is σ = 535557513990650. Its totient is φ = 535557513990648.

The previous prime is 535557513990559. The next prime is 535557513990671. The reversal of 535557513990649 is 946099315755535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 495525408160000 + 40032105830649 = 22260400^2 + 6327093^2 .

It is a cyclic number.

It is not a de Polignac number, because 535557513990649 - 2³³ = 535548924056057 is a prime.

It is not a weakly prime, because it can be changed into another prime (535557513990449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267778756995324 + 267778756995325.

It is an arithmetic number, because the mean of its divisors is an integer number (267778756995325).

Almost surely, 2^{535557513990649} is an apocalyptic number.

It is an amenable number.

535557513990649 is a deficient number, since it is larger than the sum of its proper divisors (1).

535557513990649 is an equidigital number, since it uses as much as digits as its factorization.

535557513990649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3444525000, while the sum is 76.

The spelling of 535557513990649 in words is "five hundred thirty-five trillion, five hundred fifty-seven billion, five hundred thirteen million, nine hundred ninety thousand, six hundred forty-nine".