711817779122 has 54 divisors (see below), whose sum is σ = 1197715294557. Its totient is φ = 317171095488.

The previous prime is 711817779121. The next prime is 711817779161. The reversal of 711817779122 is 221977718117.

It can be written as a sum of positive squares in 2 ways, for example, as 651473365321 + 60344413801 = 807139^2 + 245651^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=596581.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (711817779121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 385390403 + ... + 385392249.

Almost surely, 2^711817779122 is an apocalyptic number.

711817779122 is a deficient number, since it is larger than the sum of its proper divisors (485897515435).

711817779122 is an equidigital number, since it uses as much as digits as its factorization.

711817779122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768 (or 1885 counting only the distinct ones).

The product of its digits is 691488, while the sum is 53.

The spelling of 711817779122 in words is "seven hundred eleven billion, eight hundred seventeen million, seven hundred seventy-nine thousand, one hundred twenty-two".