10811381986 has 8 divisors (see below), whose sum is σ = 16377638364. Its totient is φ = 5352169200.

The previous prime is 10811381983. The next prime is 10811382007. The reversal of 10811381986 is 68918311801.

It can be written as a sum of positive squares in 2 ways, for example, as 9249630625 + 1561751361 = 96175^2 + 39519^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (10811381983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26760645 + ... + 26761048.

Almost surely, 2^10811381986 is an apocalyptic number.

10811381986 is a deficient number, since it is larger than the sum of its proper divisors (5566256378).

10811381986 is a wasteful number, since it uses less digits than its factorization.

10811381986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53521796.

The product of its (nonzero) digits is 82944, while the sum is 46.

The spelling of 10811381986 in words is "ten billion, eight hundred eleven million, three hundred eighty-one thousand, nine hundred eighty-six".