396121569017 has 2 divisors, whose sum is σ = 396121569018. Its totient is φ = 396121569016.

The previous prime is 396121569007. The next prime is 396121569023. The reversal of 396121569017 is 710965121693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266859029056 + 129262539961 = 516584^2 + 359531^2 .

It is a cyclic number.

It is not a de Polignac number, because 396121569017 - 2²⁰ = 396120520441 is a prime.

It is not a weakly prime, because it can be changed into another prime (396121569007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198060784508 + 198060784509.

It is an arithmetic number, because the mean of its divisors is an integer number (198060784509).

Almost surely, 2^396121569017 is an apocalyptic number.

It is an amenable number.

396121569017 is a deficient number, since it is larger than the sum of its proper divisors (1).

396121569017 is an equidigital number, since it uses as much as digits as its factorization.

396121569017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 50.

The spelling of 396121569017 in words is "three hundred ninety-six billion, one hundred twenty-one million, five hundred sixty-nine thousand, seventeen".