711201661012 has 24 divisors (see below), whose sum is σ = 1245376377000. Its totient is φ = 355379920896.

The previous prime is 711201660997. The next prime is 711201661031. The reversal of 711201661012 is 210166102117.

It can be written as a sum of positive squares in 4 ways, for example, as 74340203716 + 636861457296 = 272654^2 + 798036^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54495864 + ... + 54508912.

It is an arithmetic number, because the mean of its divisors is an integer number (51890682375).

Almost surely, 2^711201661012 is an apocalyptic number.

It is an amenable number.

711201661012 is a deficient number, since it is larger than the sum of its proper divisors (534174715988).

711201661012 is a wasteful number, since it uses less digits than its factorization.

711201661012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20475 (or 20473 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

Adding to 711201661012 its reverse (210166102117), we get a palindrome (921367763129).

The spelling of 711201661012 in words is "seven hundred eleven billion, two hundred one million, six hundred sixty-one thousand, twelve".