71665100047 has 8 divisors (see below), whose sum is σ = 73055663856. Its totient is φ = 70275958272.

The previous prime is 71665100033. The next prime is 71665100083. The reversal of 71665100047 is 74000156617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71665100047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71665099979 and 71665100015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71665100447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253458 + ... + 455599.

It is an arithmetic number, because the mean of its divisors is an integer number (9131957982).

Almost surely, 2^71665100047 is an apocalyptic number.

71665100047 is a deficient number, since it is larger than the sum of its proper divisors (1390563809).

71665100047 is a wasteful number, since it uses less digits than its factorization.

71665100047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711017.

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 71665100047 in words is "seventy-one billion, six hundred sixty-five million, one hundred thousand, forty-seven".