71530660008 has 96 divisors (see below), whose sum is σ = 209639102400. Its totient is φ = 22806862848.

The previous prime is 71530659989. The next prime is 71530660037. The reversal of 71530660008 is 80006603517.

71530660008 is a `hidden beast` number, since 7 + 15 + 30 + 6 + 600 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 755193 + ... + 844616.

It is an arithmetic number, because the mean of its divisors is an integer number (2183740650).

Almost surely, 2^71530660008 is an apocalyptic number.

It is an amenable number.

71530660008 is an abundant number, since it is smaller than the sum of its proper divisors (138108442392).

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

71530660008 is a wasteful number, since it uses less digits than its factorization.

71530660008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599853 (or 1599837 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 71530660008 in words is "seventy-one billion, five hundred thirty million, six hundred sixty thousand, eight".