71822822822813 has 2 divisors, whose sum is σ = 71822822822814. Its totient is φ = 71822822822812.

The previous prime is 71822822822809. The next prime is 71822822822831. The reversal of 71822822822813 is 31822822822817.

Together with next prime (71822822822831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54603202802404 + 17219620020409 = 7389398^2 + 4149653^2 .

It is a cyclic number.

It is not a de Polignac number, because 71822822822813 - 2² = 71822822822809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71822822822873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35911411411406 + 35911411411407.

It is an arithmetic number, because the mean of its divisors is an integer number (35911411411407).

Almost surely, 2^{71822822822813} is an apocalyptic number.

It is an amenable number.

71822822822813 is a deficient number, since it is larger than the sum of its proper divisors (1).

71822822822813 is an equidigital number, since it uses as much as digits as its factorization.

71822822822813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5505024, while the sum is 56.

The spelling of 71822822822813 in words is "seventy-one trillion, eight hundred twenty-two billion, eight hundred twenty-two million, eight hundred twenty-two thousand, eight hundred thirteen".