71775018008 has 16 divisors (see below), whose sum is σ = 134717344080. Its totient is φ = 35850392928.

The previous prime is 71775017989. The next prime is 71775018071. The reversal of 71775018008 is 80081057717.

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 71775018008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4631291 + ... + 4646762.

It is an arithmetic number, because the mean of its divisors is an integer number (8419834005).

Almost surely, 2^71775018008 is an apocalyptic number.

It is an amenable number.

71775018008 is a deficient number, since it is larger than the sum of its proper divisors (62942326072).

71775018008 is a wasteful number, since it uses less digits than its factorization.

71775018008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9279026 (or 9279022 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 44.

The spelling of 71775018008 in words is "seventy-one billion, seven hundred seventy-five million, eighteen thousand, eight".