791111643037 has 2 divisors, whose sum is σ = 791111643038. Its totient is φ = 791111643036.

The previous prime is 791111642987. The next prime is 791111643071. The reversal of 791111643037 is 730346111197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 599430544441 + 191681098596 = 774229^2 + 437814^2 .

It is a cyclic number.

It is not a de Polignac number, because 791111643037 - 2¹¹ = 791111640989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 791111642984 and 791111643002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791111640037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395555821518 + 395555821519.

It is an arithmetic number, because the mean of its divisors is an integer number (395555821519).

Almost surely, 2^791111643037 is an apocalyptic number.

It is an amenable number.

791111643037 is a deficient number, since it is larger than the sum of its proper divisors (1).

791111643037 is an equidigital number, since it uses as much as digits as its factorization.

791111643037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 791111643037 in words is "seven hundred ninety-one billion, one hundred eleven million, six hundred forty-three thousand, thirty-seven".