10091180861 has 2 divisors, whose sum is σ = 10091180862. Its totient is φ = 10091180860.

The previous prime is 10091180851. The next prime is 10091180881. The reversal of 10091180861 is 16808119001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9495528025 + 595652836 = 97445^2 + 24406^2 .

It is an emirp because it is prime and its reverse (16808119001) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 19808116001 and 10061180891.

It is a cyclic number.

It is not a de Polignac number, because 10091180861 - 2¹⁴ = 10091164477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10091180851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5045590430 + 5045590431.

It is an arithmetic number, because the mean of its divisors is an integer number (5045590431).

Almost surely, 2^10091180861 is an apocalyptic number.

It is an amenable number.

10091180861 is a deficient number, since it is larger than the sum of its proper divisors (1).

10091180861 is an equidigital number, since it uses as much as digits as its factorization.

10091180861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 35.

Adding to 10091180861 its reverse (16808119001), we get a palindrome (26899299862).

The spelling of 10091180861 in words is "ten billion, ninety-one million, one hundred eighty thousand, eight hundred sixty-one".