71166550620 has 48 divisors (see below), whose sum is σ = 217381465728. Its totient is φ = 17252496960.

The previous prime is 71166550591. The next prime is 71166550633. The reversal of 71166550620 is 2605566117.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53913394 + ... + 53914713.

It is an arithmetic number, because the mean of its divisors is an integer number (4528780536).

Almost surely, 2^71166550620 is an apocalyptic number.

It is an amenable number.

71166550620 is an abundant number, since it is smaller than the sum of its proper divisors (146214915108).

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

71166550620 is a wasteful number, since it uses less digits than its factorization.

71166550620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107828130 (or 107828128 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 71166550620 in words is "seventy-one billion, one hundred sixty-six million, five hundred fifty thousand, six hundred twenty".