5071666511 has 4 divisors (see below), whose sum is σ = 5080134000. Its totient is φ = 5063199024.

The previous prime is 5071666507. The next prime is 5071666529. The reversal of 5071666511 is 1156661705.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5071666511 - 2² = 5071666507 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5071666541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4232846 + ... + 4234043.

It is an arithmetic number, because the mean of its divisors is an integer number (1270033500).

Almost surely, 2^5071666511 is an apocalyptic number.

5071666511 is a deficient number, since it is larger than the sum of its proper divisors (8467489).

5071666511 is an equidigital number, since it uses as much as digits as its factorization.

5071666511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8467488.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 5071666511 is about 71215.6338945319. The cubic root of 5071666511 is about 1718.1070881679.

The spelling of 5071666511 in words is "five billion, seventy-one million, six hundred sixty-six thousand, five hundred eleven".