117066922781 has 2 divisors, whose sum is σ = 117066922782. Its totient is φ = 117066922780.

The previous prime is 117066922751. The next prime is 117066922859. The reversal of 117066922781 is 187229660711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116206673881 + 860248900 = 340891^2 + 29330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117066922781 is a prime.

It is a super-3 number, since 3×117066922781³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117066922751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58533461390 + 58533461391.

It is an arithmetic number, because the mean of its divisors is an integer number (58533461391).

Almost surely, 2^117066922781 is an apocalyptic number.

It is an amenable number.

117066922781 is a deficient number, since it is larger than the sum of its proper divisors (1).

117066922781 is an equidigital number, since it uses as much as digits as its factorization.

117066922781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 50.

The spelling of 117066922781 in words is "one hundred seventeen billion, sixty-six million, nine hundred twenty-two thousand, seven hundred eighty-one".