71547948066 has 32 divisors (see below), whose sum is σ = 164985418368. Its totient is φ = 20261364480.

The previous prime is 71547948001. The next prime is 71547948077. The reversal of 71547948066 is 66084974517.

It is a junction number, because it is equal to n+sod(n) for n = 71547947997 and 71547948015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7532965 + ... + 7542456.

It is an arithmetic number, because the mean of its divisors is an integer number (5155794324).

Almost surely, 2^71547948066 is an apocalyptic number.

71547948066 is an abundant number, since it is smaller than the sum of its proper divisors (93437470302).

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

71547948066 is a wasteful number, since it uses less digits than its factorization.

71547948066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15075546.

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 71547948066 in words is "seventy-one billion, five hundred forty-seven million, nine hundred forty-eight thousand, sixty-six".