2079921814849 has 2 divisors, whose sum is σ = 2079921814850. Its totient is φ = 2079921814848.

The previous prime is 2079921814829. The next prime is 2079921814871. The reversal of 2079921814849 is 9484181299702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1491720249600 + 588201565249 = 1221360^2 + 766943^2 .

It is a cyclic number.

It is not a de Polignac number, because 2079921814849 - 2⁷ = 2079921814721 is a prime.

It is not a weakly prime, because it can be changed into another prime (2079921814829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039960907424 + 1039960907425.

It is an arithmetic number, because the mean of its divisors is an integer number (1039960907425).

Almost surely, 2^{2079921814849} is an apocalyptic number.

It is an amenable number.

2079921814849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2079921814849 is an equidigital number, since it uses as much as digits as its factorization.

2079921814849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20901888, while the sum is 64.

The spelling of 2079921814849 in words is "two trillion, seventy-nine billion, nine hundred twenty-one million, eight hundred fourteen thousand, eight hundred forty-nine".