71989337053 has 2 divisors, whose sum is σ = 71989337054. Its totient is φ = 71989337052.

The previous prime is 71989337051. The next prime is 71989337093. The reversal of 71989337053 is 35073398917.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50096287684 + 21893049369 = 223822^2 + 147963^2 .

It is a cyclic number.

It is not a de Polignac number, because 71989337053 - 2¹ = 71989337051 is a prime.

Together with 71989337051, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 71989336985 and 71989337003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71989337051) 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, 35994668526 + 35994668527.

It is an arithmetic number, because the mean of its divisors is an integer number (35994668527).

Almost surely, 2^71989337053 is an apocalyptic number.

It is an amenable number.

71989337053 is a deficient number, since it is larger than the sum of its proper divisors (1).

71989337053 is an equidigital number, since it uses as much as digits as its factorization.

71989337053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4286520, while the sum is 55.

The spelling of 71989337053 in words is "seventy-one billion, nine hundred eighty-nine million, three hundred thirty-seven thousand, fifty-three".