772123023197 has 2 divisors, whose sum is σ = 772123023198. Its totient is φ = 772123023196.

The previous prime is 772123023187. The next prime is 772123023271. The reversal of 772123023197 is 791320321277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 430212680836 + 341910342361 = 655906^2 + 584731^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-772123023197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (772123023167) 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, 386061511598 + 386061511599.

It is an arithmetic number, because the mean of its divisors is an integer number (386061511599).

Almost surely, 2^772123023197 is an apocalyptic number.

It is an amenable number.

772123023197 is a deficient number, since it is larger than the sum of its proper divisors (1).

772123023197 is an equidigital number, since it uses as much as digits as its factorization.

772123023197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 44.

The spelling of 772123023197 in words is "seven hundred seventy-two billion, one hundred twenty-three million, twenty-three thousand, one hundred ninety-seven".