791587949783149 has 2 divisors, whose sum is σ = 791587949783150. Its totient is φ = 791587949783148.

The previous prime is 791587949783107. The next prime is 791587949783221. The reversal of 791587949783149 is 941387949785197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 559402581766249 + 232185368016900 = 23651693^2 + 15237630^2 .

It is a cyclic number.

It is not a de Polignac number, because 791587949783149 - 2¹⁹ = 791587949258861 is a prime.

It is a super-2 number, since 2×791587949783149² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791587949783249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395793974891574 + 395793974891575.

It is an arithmetic number, because the mean of its divisors is an integer number (395793974891575).

Almost surely, 2^{791587949783149} is an apocalyptic number.

It is an amenable number.

791587949783149 is a deficient number, since it is larger than the sum of its proper divisors (1).

791587949783149 is an equidigital number, since it uses as much as digits as its factorization.

791587949783149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34566497280, while the sum is 91.

The spelling of 791587949783149 in words is "seven hundred ninety-one trillion, five hundred eighty-seven billion, nine hundred forty-nine million, seven hundred eighty-three thousand, one hundred forty-nine".