71507857219 has 2 divisors, whose sum is σ = 71507857220. Its totient is φ = 71507857218.

The previous prime is 71507857123. The next prime is 71507857271. The reversal of 71507857219 is 91275870517.

It is an a-pointer prime, because the next prime (71507857271) can be obtained adding 71507857219 to its sum of digits (52).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71507857219 - 2¹¹ = 71507855171 is a prime.

It is a super-2 number, since 2×71507857219² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71507857019) 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, 35753928609 + 35753928610.

It is an arithmetic number, because the mean of its divisors is an integer number (35753928610).

Almost surely, 2^71507857219 is an apocalyptic number.

71507857219 is a deficient number, since it is larger than the sum of its proper divisors (1).

71507857219 is an equidigital number, since it uses as much as digits as its factorization.

71507857219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1234800, while the sum is 52.

The spelling of 71507857219 in words is "seventy-one billion, five hundred seven million, eight hundred fifty-seven thousand, two hundred nineteen".