9120783586381 has 2 divisors, whose sum is σ = 9120783586382. Its totient is φ = 9120783586380.

The previous prime is 9120783586361. The next prime is 9120783586457. The reversal of 9120783586381 is 1836853870219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8465388097156 + 655395489225 = 2909534^2 + 809565^2 .

It is an emirp because it is prime and its reverse (1836853870219) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9120783586381 - 2¹¹ = 9120783584333 is a prime.

It is a super-2 number, since 2×9120783586381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9120783586361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4560391793190 + 4560391793191.

It is an arithmetic number, because the mean of its divisors is an integer number (4560391793191).

Almost surely, 2^{9120783586381} is an apocalyptic number.

It is an amenable number.

9120783586381 is a deficient number, since it is larger than the sum of its proper divisors (1).

9120783586381 is an equidigital number, since it uses as much as digits as its factorization.

9120783586381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 9120783586381 in words is "nine trillion, one hundred twenty billion, seven hundred eighty-three million, five hundred eighty-six thousand, three hundred eighty-one".