71904757219 has 2 divisors, whose sum is σ = 71904757220. Its totient is φ = 71904757218.

The previous prime is 71904757213. The next prime is 71904757289. The reversal of 71904757219 is 91275740917.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71904757219 - 2²³ = 71896368611 is a prime.

It is a super-2 number, since 2×71904757219² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71904757213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35952378609 + 35952378610.

It is an arithmetic number, because the mean of its divisors is an integer number (35952378610).

Almost surely, 2^71904757219 is an apocalyptic number.

71904757219 is a deficient number, since it is larger than the sum of its proper divisors (1).

71904757219 is an equidigital number, since it uses as much as digits as its factorization.

71904757219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1111320, while the sum is 52.

The spelling of 71904757219 in words is "seventy-one billion, nine hundred four million, seven hundred fifty-seven thousand, two hundred nineteen".