1641299843201 has 2 divisors, whose sum is σ = 1641299843202. Its totient is φ = 1641299843200.

The previous prime is 1641299843167. The next prime is 1641299843231. The reversal of 1641299843201 is 1023489921461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 827010178801 + 814289664400 = 909401^2 + 902380^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641299843201 - 2⁶ = 1641299843137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1641299843201.

It is not a weakly prime, because it can be changed into another prime (1641299843231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820649921600 + 820649921601.

It is an arithmetic number, because the mean of its divisors is an integer number (820649921601).

Almost surely, 2^{1641299843201} is an apocalyptic number.

It is an amenable number.

1641299843201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641299843201 is an equidigital number, since it uses as much as digits as its factorization.

1641299843201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 1641299843201 in words is "one trillion, six hundred forty-one billion, two hundred ninety-nine million, eight hundred forty-three thousand, two hundred one".