1641340855499 has 2 divisors, whose sum is σ = 1641340855500. Its totient is φ = 1641340855498.

The previous prime is 1641340855463. The next prime is 1641340855579. The reversal of 1641340855499 is 9945580431461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1641340855499 - 2⁸ = 1641340855243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1641340855199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820670427749 + 820670427750.

It is an arithmetic number, because the mean of its divisors is an integer number (820670427750).

Almost surely, 2^{1641340855499} is an apocalyptic number.

1641340855499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641340855499 is an equidigital number, since it uses as much as digits as its factorization.

1641340855499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18662400, while the sum is 59.

The spelling of 1641340855499 in words is "one trillion, six hundred forty-one billion, three hundred forty million, eight hundred fifty-five thousand, four hundred ninety-nine".