71975246773 has 2 divisors, whose sum is σ = 71975246774. Its totient is φ = 71975246772.

The previous prime is 71975246771. The next prime is 71975246803. The reversal of 71975246773 is 37764257917.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60212325924 + 11762920849 = 245382^2 + 108457^2 .

It is a cyclic number.

It is not a de Polignac number, because 71975246773 - 2¹ = 71975246771 is a prime.

It is a super-2 number, since 2×71975246773² (a number of 23 digits) contains 22 as substring.

Together with 71975246771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71975246771) 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, 35987623386 + 35987623387.

It is an arithmetic number, because the mean of its divisors is an integer number (35987623387).

Almost surely, 2^71975246773 is an apocalyptic number.

It is an amenable number.

71975246773 is a deficient number, since it is larger than the sum of its proper divisors (1).

71975246773 is an equidigital number, since it uses as much as digits as its factorization.

71975246773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15558480, while the sum is 58.

The spelling of 71975246773 in words is "seventy-one billion, nine hundred seventy-five million, two hundred forty-six thousand, seven hundred seventy-three".