71448847767 has 64 divisors (see below), whose sum is σ = 116294123520. Its totient is φ = 42995282400.

The previous prime is 71448847741. The next prime is 71448847777. The reversal of 71448847767 is 76774884417.

It is a happy number.

It is not a de Polignac number, because 71448847767 - 2²³ = 71440459159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71448847777) 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 63 ways as a sum of consecutive naturals, for example, 46912468 + ... + 46913990.

It is an arithmetic number, because the mean of its divisors is an integer number (1817095680).

Almost surely, 2^71448847767 is an apocalyptic number.

71448847767 is a deficient number, since it is larger than the sum of its proper divisors (44845275753).

71448847767 is a wasteful number, since it uses less digits than its factorization.

71448847767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561 (or 2555 counting only the distinct ones).

The product of its digits is 59006976, while the sum is 63.

The spelling of 71448847767 in words is "seventy-one billion, four hundred forty-eight million, eight hundred forty-seven thousand, seven hundred sixty-seven".