791891418337 has 2 divisors, whose sum is σ = 791891418338. Its totient is φ = 791891418336.

The previous prime is 791891418323. The next prime is 791891418407. The reversal of 791891418337 is 733814198197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 448429783201 + 343461635136 = 669649^2 + 586056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-791891418337 is a prime.

It is not a weakly prime, because it can be changed into another prime (791891418037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395945709168 + 395945709169.

It is an arithmetic number, because the mean of its divisors is an integer number (395945709169).

Almost surely, 2^791891418337 is an apocalyptic number.

It is an amenable number.

791891418337 is a deficient number, since it is larger than the sum of its proper divisors (1).

791891418337 is an equidigital number, since it uses as much as digits as its factorization.

791891418337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9144576, while the sum is 61.

The spelling of 791891418337 in words is "seven hundred ninety-one billion, eight hundred ninety-one million, four hundred eighteen thousand, three hundred thirty-seven".