1642801497803 has 2 divisors, whose sum is σ = 1642801497804. Its totient is φ = 1642801497802.

The previous prime is 1642801497763. The next prime is 1642801497809. The reversal of 1642801497803 is 3087941082461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1642801497803 - 2³⁴ = 1625621628619 is a prime.

It is a super-2 number, since 2×1642801497803² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1642801497809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821400748901 + 821400748902.

It is an arithmetic number, because the mean of its divisors is an integer number (821400748902).

Almost surely, 2^{1642801497803} is an apocalyptic number.

1642801497803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642801497803 is an equidigital number, since it uses as much as digits as its factorization.

1642801497803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 1642801497803 in words is "one trillion, six hundred forty-two billion, eight hundred one million, four hundred ninety-seven thousand, eight hundred three".