353666801563 has 2 divisors, whose sum is σ = 353666801564. Its totient is φ = 353666801562.

The previous prime is 353666801549. The next prime is 353666801567. The reversal of 353666801563 is 365108666353.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 353666801563 - 2²¹ = 353664704411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 353666801563.

It is not a weakly prime, because it can be changed into another prime (353666801567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176833400781 + 176833400782.

It is an arithmetic number, because the mean of its divisors is an integer number (176833400782).

Almost surely, 2^353666801563 is an apocalyptic number.

353666801563 is a deficient number, since it is larger than the sum of its proper divisors (1).

353666801563 is an equidigital number, since it uses as much as digits as its factorization.

353666801563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6998400, while the sum is 52.

The spelling of 353666801563 in words is "three hundred fifty-three billion, six hundred sixty-six million, eight hundred one thousand, five hundred sixty-three".