791840356049 has 2 divisors, whose sum is σ = 791840356050. Its totient is φ = 791840356048.

The previous prime is 791840356033. The next prime is 791840356063. The reversal of 791840356049 is 940653048197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 547092477649 + 244747878400 = 739657^2 + 494720^2 .

It is a cyclic number.

It is not a de Polignac number, because 791840356049 - 2⁴ = 791840356033 is a prime.

It is a super-2 number, since 2×791840356049² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 791840355985 and 791840356003.

It is not a weakly prime, because it can be changed into another prime (791840356649) 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, 395920178024 + 395920178025.

It is an arithmetic number, because the mean of its divisors is an integer number (395920178025).

Almost surely, 2^791840356049 is an apocalyptic number.

It is an amenable number.

791840356049 is a deficient number, since it is larger than the sum of its proper divisors (1).

791840356049 is an equidigital number, since it uses as much as digits as its factorization.

791840356049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 791840356049 in words is "seven hundred ninety-one billion, eight hundred forty million, three hundred fifty-six thousand, forty-nine".