71148563612 has 24 divisors (see below), whose sum is σ = 142576717920. Its totient is φ = 30432329280.

The previous prime is 71148563609. The next prime is 71148563621. The reversal of 71148563612 is 21636584117.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2481839 + ... + 2510342.

It is an arithmetic number, because the mean of its divisors is an integer number (5940696580).

Almost surely, 2^71148563612 is an apocalyptic number.

It is an amenable number.

71148563612 is an abundant number, since it is smaller than the sum of its proper divisors (71428154308).

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

71148563612 is a wasteful number, since it uses less digits than its factorization.

71148563612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4992701 (or 4992699 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The spelling of 71148563612 in words is "seventy-one billion, one hundred forty-eight million, five hundred sixty-three thousand, six hundred twelve".