11043737685 has 12 divisors (see below), whose sum is σ = 19142478732. Its totient is φ = 5889993408.

The previous prime is 11043737681. The next prime is 11043737701. The reversal of 11043737685 is 58673734011.

It can be written as a sum of positive squares in 2 ways, for example, as 3740667921 + 7303069764 = 61161^2 + 85458^2 .

It is not a de Polignac number, because 11043737685 - 2² = 11043737681 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 245416393 = 11043737685 / (1 + 1 + 0 + 4 + 3 + 7 + 3 + 7 + 6 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 11043737685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11043737681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122708152 + ... + 122708241.

It is an arithmetic number, because the mean of its divisors is an integer number (1595206561).

Almost surely, 2^11043737685 is an apocalyptic number.

11043737685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11043737685 is a deficient number, since it is larger than the sum of its proper divisors (8098741047).

11043737685 is a wasteful number, since it uses less digits than its factorization.

11043737685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245416404 (or 245416401 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 11043737685 in words is "eleven billion, forty-three million, seven hundred thirty-seven thousand, six hundred eighty-five".