71666212600 has 24 divisors (see below), whose sum is σ = 166623944760. Its totient is φ = 28666484960.

The previous prime is 71666212591. The next prime is 71666212633. The reversal of 71666212600 is 621266617.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 71666212600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 179165332 + ... + 179165731.

It is an arithmetic number, because the mean of its divisors is an integer number (6942664365).

Almost surely, 2^71666212600 is an apocalyptic number.

It is an amenable number.

71666212600 is an abundant number, since it is smaller than the sum of its proper divisors (94957732160).

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

71666212600 is a wasteful number, since it uses less digits than its factorization.

71666212600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358331079 (or 358331070 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 71666212600 in words is "seventy-one billion, six hundred sixty-six million, two hundred twelve thousand, six hundred".