117211577677 has 2 divisors, whose sum is σ = 117211577678. Its totient is φ = 117211577676.

The previous prime is 117211577669. The next prime is 117211577699. The reversal of 117211577677 is 776775112711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117173397636 + 38180041 = 342306^2 + 6179^2 .

It is a cyclic number.

It is not a de Polignac number, because 117211577677 - 2³ = 117211577669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117211077677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58605788838 + 58605788839.

It is an arithmetic number, because the mean of its divisors is an integer number (58605788839).

Almost surely, 2^117211577677 is an apocalyptic number.

It is an amenable number.

117211577677 is a deficient number, since it is larger than the sum of its proper divisors (1).

117211577677 is an equidigital number, since it uses as much as digits as its factorization.

117211577677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008420, while the sum is 52.

The spelling of 117211577677 in words is "one hundred seventeen billion, two hundred eleven million, five hundred seventy-seven thousand, six hundred seventy-seven".