1655873080091 has 2 divisors, whose sum is σ = 1655873080092. Its totient is φ = 1655873080090.

The previous prime is 1655873080049. The next prime is 1655873080111. The reversal of 1655873080091 is 1900803785561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1655873080091 - 2¹⁰ = 1655873079067 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1655873080291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827936540045 + 827936540046.

It is an arithmetic number, because the mean of its divisors is an integer number (827936540046).

Almost surely, 2^{1655873080091} is an apocalyptic number.

1655873080091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655873080091 is an equidigital number, since it uses as much as digits as its factorization.

1655873080091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 53.

The spelling of 1655873080091 in words is "one trillion, six hundred fifty-five billion, eight hundred seventy-three million, eighty thousand, ninety-one".