10999087181 has 2 divisors, whose sum is σ = 10999087182. Its totient is φ = 10999087180.

The previous prime is 10999087123. The next prime is 10999087189. The reversal of 10999087181 is 18178099901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10627754281 + 371332900 = 103091^2 + 19270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10999087181 is a prime.

It is a super-2 number, since 2×10999087181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10999087189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5499543590 + 5499543591.

It is an arithmetic number, because the mean of its divisors is an integer number (5499543591).

Almost surely, 2^10999087181 is an apocalyptic number.

It is an amenable number.

10999087181 is a deficient number, since it is larger than the sum of its proper divisors (1).

10999087181 is an equidigital number, since it uses as much as digits as its factorization.

10999087181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 53.

The spelling of 10999087181 in words is "ten billion, nine hundred ninety-nine million, eighty-seven thousand, one hundred eighty-one".