71695181851 has 2 divisors, whose sum is σ = 71695181852. Its totient is φ = 71695181850.

The previous prime is 71695181843. The next prime is 71695181891. The reversal of 71695181851 is 15818159617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71695181851 - 2³ = 71695181843 is a prime.

It is not a weakly prime, because it can be changed into another prime (71695181891) 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, 35847590925 + 35847590926.

It is an arithmetic number, because the mean of its divisors is an integer number (35847590926).

Almost surely, 2^71695181851 is an apocalyptic number.

71695181851 is a deficient number, since it is larger than the sum of its proper divisors (1).

71695181851 is an equidigital number, since it uses as much as digits as its factorization.

71695181851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 52.

The spelling of 71695181851 in words is "seventy-one billion, six hundred ninety-five million, one hundred eighty-one thousand, eight hundred fifty-one".