671511216711 has 32 divisors (see below), whose sum is σ = 959646002688. Its totient is φ = 416585220480.

The previous prime is 671511216709. The next prime is 671511216751. The reversal of 671511216711 is 117612115176.

It is not a de Polignac number, because 671511216711 - 2¹ = 671511216709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 671511216711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671511216751) 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, 37829140 + ... + 37846886.

It is an arithmetic number, because the mean of its divisors is an integer number (29988937584).

Almost surely, 2^671511216711 is an apocalyptic number.

671511216711 is a deficient number, since it is larger than the sum of its proper divisors (288134785977).

671511216711 is a wasteful number, since it uses less digits than its factorization.

671511216711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32631.

The product of its digits is 17640, while the sum is 39.

The spelling of 671511216711 in words is "six hundred seventy-one billion, five hundred eleven million, two hundred sixteen thousand, seven hundred eleven".