711316477255621 has 2 divisors, whose sum is σ = 711316477255622. Its totient is φ = 711316477255620.

The previous prime is 711316477255561. The next prime is 711316477255661. The reversal of 711316477255621 is 126552774613117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 479371801382721 + 231944675872900 = 21894561^2 + 15229730^2 .

It is a cyclic number.

It is not a de Polignac number, because 711316477255621 - 2¹⁵ = 711316477222853 is a prime.

It is a super-2 number, since 2×711316477255621² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (711316477255661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355658238627810 + 355658238627811.

It is an arithmetic number, because the mean of its divisors is an integer number (355658238627811).

Almost surely, 2^{711316477255621} is an apocalyptic number.

It is an amenable number.

711316477255621 is a deficient number, since it is larger than the sum of its proper divisors (1).

711316477255621 is an equidigital number, since it uses as much as digits as its factorization.

711316477255621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14817600, while the sum is 58.

The spelling of 711316477255621 in words is "seven hundred eleven trillion, three hundred sixteen billion, four hundred seventy-seven million, two hundred fifty-five thousand, six hundred twenty-one".