71255566767 has 16 divisors (see below), whose sum is σ = 118450812672. Its totient is φ = 37015878720.

The previous prime is 71255566751. The next prime is 71255566799. The reversal of 71255566767 is 76766555217.

It is not a de Polignac number, because 71255566767 - 2⁴ = 71255566751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71255566727) 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 in 15 ways as a sum of consecutive naturals, for example, 154232598 + ... + 154233059.

It is an arithmetic number, because the mean of its divisors is an integer number (7403175792).

Almost surely, 2^71255566767 is an apocalyptic number.

71255566767 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

71255566767 is a deficient number, since it is larger than the sum of its proper divisors (47195245905).

71255566767 is a wasteful number, since it uses less digits than its factorization.

71255566767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308465678.

The product of its digits is 18522000, while the sum is 57.

The spelling of 71255566767 in words is "seventy-one billion, two hundred fifty-five million, five hundred sixty-six thousand, seven hundred sixty-seven".