711979655705 has 4 divisors (see below), whose sum is σ = 854375586852. Its totient is φ = 569583724560.

The previous prime is 711979655693. The next prime is 711979655749. The reversal of 711979655705 is 507556979117.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 507556979117 = 59 ⋅8602660663.

It can be written as a sum of positive squares in 2 ways, for example, as 487534908169 + 224444747536 = 698237^2 + 473756^2 .

It is not a de Polignac number, because 711979655705 - 2⁸ = 711979655449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71197965566 + ... + 71197965575.

It is an arithmetic number, because the mean of its divisors is an integer number (213593896713).

Almost surely, 2^711979655705 is an apocalyptic number.

It is an amenable number.

711979655705 is a deficient number, since it is larger than the sum of its proper divisors (142395931147).

711979655705 is a wasteful number, since it uses less digits than its factorization.

711979655705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142395931146.

The product of its (nonzero) digits is 20837250, while the sum is 62.

The spelling of 711979655705 in words is "seven hundred eleven billion, nine hundred seventy-nine million, six hundred fifty-five thousand, seven hundred five".