791374172761 has 2 divisors, whose sum is σ = 791374172762. Its totient is φ = 791374172760.

The previous prime is 791374172713. The next prime is 791374172783. The reversal of 791374172761 is 167271473197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 479876238361 + 311497934400 = 692731^2 + 558120^2 .

It is an emirp because it is prime and its reverse (167271473197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 791374172761 - 2¹³ = 791374164569 is a prime.

It is not a weakly prime, because it can be changed into another prime (791374178761) 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, 395687086380 + 395687086381.

It is an arithmetic number, because the mean of its divisors is an integer number (395687086381).

Almost surely, 2^791374172761 is an apocalyptic number.

It is an amenable number.

791374172761 is a deficient number, since it is larger than the sum of its proper divisors (1).

791374172761 is an equidigital number, since it uses as much as digits as its factorization.

791374172761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3111696, while the sum is 55.

The spelling of 791374172761 in words is "seven hundred ninety-one billion, three hundred seventy-four million, one hundred seventy-two thousand, seven hundred sixty-one".