671810070611 has 4 divisors (see below), whose sum is σ = 707168495400. Its totient is φ = 636451645824.

The previous prime is 671810070563. The next prime is 671810070629. The reversal of 671810070611 is 116070018176.

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 671810070611 - 2¹⁰ = 671810069587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671810070691) 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, 17679212366 + ... + 17679212403.

It is an arithmetic number, because the mean of its divisors is an integer number (176792123850).

Almost surely, 2^671810070611 is an apocalyptic number.

671810070611 is a deficient number, since it is larger than the sum of its proper divisors (35358424789).

671810070611 is a wasteful number, since it uses less digits than its factorization.

671810070611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35358424788.

The product of its (nonzero) digits is 14112, while the sum is 38.

Adding to 671810070611 its reverse (116070018176), we get a palindrome (787880088787).

The spelling of 671810070611 in words is "six hundred seventy-one billion, eight hundred ten million, seventy thousand, six hundred eleven".