71496876809 has 2 divisors, whose sum is σ = 71496876810. Its totient is φ = 71496876808.

The previous prime is 71496876797. The next prime is 71496876811. The reversal of 71496876809 is 90867869417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68881577209 + 2615299600 = 262453^2 + 51140^2 .

It is a cyclic number.

It is not a de Polignac number, because 71496876809 - 2⁴ = 71496876793 is a prime.

It is a super-2 number, since 2×71496876809² (a number of 23 digits) contains 22 as substring.

Together with 71496876811, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71496878809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35748438404 + 35748438405.

It is an arithmetic number, because the mean of its divisors is an integer number (35748438405).

Almost surely, 2^71496876809 is an apocalyptic number.

It is an amenable number.

71496876809 is a deficient number, since it is larger than the sum of its proper divisors (1).

71496876809 is an equidigital number, since it uses as much as digits as its factorization.

71496876809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36578304, while the sum is 65.

The spelling of 71496876809 in words is "seventy-one billion, four hundred ninety-six million, eight hundred seventy-six thousand, eight hundred nine".