71209123548 has 48 divisors (see below), whose sum is σ = 166937412096. Its totient is φ = 23624634240.

The previous prime is 71209123543. The next prime is 71209123553. The reversal of 71209123548 is 84532190217.

It is an interprime number because it is at equal distance from previous prime (71209123543) and next prime (71209123553).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71209123543) 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, 10182333 + ... + 10189323.

It is an arithmetic number, because the mean of its divisors is an integer number (3477862752).

Almost surely, 2^71209123548 is an apocalyptic number.

It is an amenable number.

71209123548 is an abundant number, since it is smaller than the sum of its proper divisors (95728288548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71209123548 is a wasteful number, since it uses less digits than its factorization.

71209123548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10874 (or 10872 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 71209123548 in words is "seventy-one billion, two hundred nine million, one hundred twenty-three thousand, five hundred forty-eight".