1640678098159 has 2 divisors, whose sum is σ = 1640678098160. Its totient is φ = 1640678098158.

The previous prime is 1640678098151. The next prime is 1640678098177. The reversal of 1640678098159 is 9518908760461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1640678098159 - 2³ = 1640678098151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1640678098159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1640678098151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820339049079 + 820339049080.

It is an arithmetic number, because the mean of its divisors is an integer number (820339049080).

Almost surely, 2^{1640678098159} is an apocalyptic number.

1640678098159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640678098159 is an equidigital number, since it uses as much as digits as its factorization.

1640678098159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26127360, while the sum is 64.

The spelling of 1640678098159 in words is "one trillion, six hundred forty billion, six hundred seventy-eight million, ninety-eight thousand, one hundred fifty-nine".