521675216711 has 8 divisors (see below), whose sum is σ = 569120408064. Its totient is φ = 474233387320.

The previous prime is 521675216683. The next prime is 521675216723. The reversal of 521675216711 is 117612576125.

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

It is a de Polignac number, because none of the positive numbers 2^k-521675216711 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 (521675216761) 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, 510401 + ... + 1141866.

It is an arithmetic number, because the mean of its divisors is an integer number (71140051008).

Almost surely, 2^521675216711 is an apocalyptic number.

521675216711 is a deficient number, since it is larger than the sum of its proper divisors (47445191353).

521675216711 is a wasteful number, since it uses less digits than its factorization.

521675216711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680981.

The product of its digits is 176400, while the sum is 44.

The spelling of 521675216711 in words is "five hundred twenty-one billion, six hundred seventy-five million, two hundred sixteen thousand, seven hundred eleven".