71107666625 has 32 divisors (see below), whose sum is σ = 91042818048. Its totient is φ = 55430294400.

The previous prime is 71107666621. The next prime is 71107666627. The reversal of 71107666625 is 52666670117.

It is not a de Polignac number, because 71107666625 - 2² = 71107666621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 71107666625.

It is not an unprimeable number, because it can be changed into a prime (71107666621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 710432 + ... + 804318.

It is an arithmetic number, because the mean of its divisors is an integer number (2845088064).

Almost surely, 2^71107666625 is an apocalyptic number.

It is an amenable number.

71107666625 is a deficient number, since it is larger than the sum of its proper divisors (19935151423).

71107666625 is an equidigital number, since it uses as much as digits as its factorization.

71107666625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94058 (or 94048 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 71107666625 in words is "seventy-one billion, one hundred seven million, six hundred sixty-six thousand, six hundred twenty-five".