711616676821 has 4 divisors (see below), whose sum is σ = 723282524044. Its totient is φ = 699950829600.

The previous prime is 711616676777. The next prime is 711616676843. The reversal of 711616676821 is 128676616117.

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

It can be written as a sum of positive squares in 2 ways, for example, as 187476876196 + 524139800625 = 432986^2 + 723975^2 .

It is a cyclic number.

It is not a de Polignac number, because 711616676821 - 2²⁵ = 711583122389 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 (711616676851) 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, 5832923520 + ... + 5832923641.

It is an arithmetic number, because the mean of its divisors is an integer number (180820631011).

Almost surely, 2^711616676821 is an apocalyptic number.

It is an amenable number.

711616676821 is a deficient number, since it is larger than the sum of its proper divisors (11665847223).

711616676821 is a wasteful number, since it uses less digits than its factorization.

711616676821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11665847222.

The product of its digits is 1016064, while the sum is 52.

The spelling of 711616676821 in words is "seven hundred eleven billion, six hundred sixteen million, six hundred seventy-six thousand, eight hundred twenty-one".