71754922649 has 2 divisors, whose sum is σ = 71754922650. Its totient is φ = 71754922648.

The previous prime is 71754922601. The next prime is 71754922669. The reversal of 71754922649 is 94622945717.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70795905625 + 959017024 = 266075^2 + 30968^2 .

It is a cyclic number.

It is not a de Polignac number, because 71754922649 - 2³⁶ = 3035445913 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71754922594 and 71754922603.

It is not a weakly prime, because it can be changed into another prime (71754922669) 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, 35877461324 + 35877461325.

It is an arithmetic number, because the mean of its divisors is an integer number (35877461325).

Almost surely, 2^71754922649 is an apocalyptic number.

It is an amenable number.

71754922649 is a deficient number, since it is larger than the sum of its proper divisors (1).

71754922649 is an equidigital number, since it uses as much as digits as its factorization.

71754922649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 56.

The spelling of 71754922649 in words is "seventy-one billion, seven hundred fifty-four million, nine hundred twenty-two thousand, six hundred forty-nine".