1655105894543 has 2 divisors, whose sum is σ = 1655105894544. Its totient is φ = 1655105894542.

The previous prime is 1655105894503. The next prime is 1655105894581. The reversal of 1655105894543 is 3454985015561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1655105894543 - 2⁸ = 1655105894287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1655105894503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827552947271 + 827552947272.

It is an arithmetic number, because the mean of its divisors is an integer number (827552947272).

Almost surely, 2^{1655105894543} is an apocalyptic number.

1655105894543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655105894543 is an equidigital number, since it uses as much as digits as its factorization.

1655105894543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960000, while the sum is 56.

The spelling of 1655105894543 in words is "one trillion, six hundred fifty-five billion, one hundred five million, eight hundred ninety-four thousand, five hundred forty-three".