71883809969 has 2 divisors, whose sum is σ = 71883809970. Its totient is φ = 71883809968.

The previous prime is 71883809951. The next prime is 71883809981. The reversal of 71883809969 is 96990838817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59387253025 + 12496556944 = 243695^2 + 111788^2 .

It is a cyclic number.

It is not a de Polignac number, because 71883809969 - 2¹⁶ = 71883744433 is a prime.

It is a super-2 number, since 2×71883809969² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71883809899 and 71883809908.

It is not a weakly prime, because it can be changed into another prime (71883809869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35941904984 + 35941904985.

It is an arithmetic number, because the mean of its divisors is an integer number (35941904985).

Almost surely, 2^71883809969 is an apocalyptic number.

It is an amenable number.

71883809969 is a deficient number, since it is larger than the sum of its proper divisors (1).

71883809969 is an equidigital number, since it uses as much as digits as its factorization.

71883809969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47029248, while the sum is 68.

The spelling of 71883809969 in words is "seventy-one billion, eight hundred eighty-three million, eight hundred nine thousand, nine hundred sixty-nine".