711812677621 has 4 divisors (see below), whose sum is σ = 716075029152. Its totient is φ = 707550326092.

The previous prime is 711812677607. The next prime is 711812677633. The reversal of 711812677621 is 126776218117.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126776218117 = 250963 ⋅505159.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-711812677621 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (711812677421) 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, 2131175515 + ... + 2131175848.

It is an arithmetic number, because the mean of its divisors is an integer number (179018757288).

Almost surely, 2^711812677621 is an apocalyptic number.

It is an amenable number.

711812677621 is a deficient number, since it is larger than the sum of its proper divisors (4262351531).

711812677621 is a wasteful number, since it uses less digits than its factorization.

711812677621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262351530.

The product of its digits is 395136, while the sum is 49.

The spelling of 711812677621 in words is "seven hundred eleven billion, eight hundred twelve million, six hundred seventy-seven thousand, six hundred twenty-one".