71822752069 has 2 divisors, whose sum is σ = 71822752070. Its totient is φ = 71822752068.

The previous prime is 71822752063. The next prime is 71822752091. The reversal of 71822752069 is 96025722817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69927455844 + 1895296225 = 264438^2 + 43535^2 .

It is a cyclic number.

It is not a de Polignac number, because 71822752069 - 2¹³ = 71822743877 is a prime.

It is a super-2 number, since 2×71822752069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71822752063) 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, 35911376034 + 35911376035.

It is an arithmetic number, because the mean of its divisors is an integer number (35911376035).

Almost surely, 2^71822752069 is an apocalyptic number.

It is an amenable number.

71822752069 is a deficient number, since it is larger than the sum of its proper divisors (1).

71822752069 is an equidigital number, since it uses as much as digits as its factorization.

71822752069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 71822752069 in words is "seventy-one billion, eight hundred twenty-two million, seven hundred fifty-two thousand, sixty-nine".