10904687209 has 16 divisors (see below), whose sum is σ = 11842039440. Its totient is φ = 9981573120.

The previous prime is 10904687191. The next prime is 10904687237. The reversal of 10904687209 is 90278640901.

It can be written as a sum of positive squares in 8 ways, for example, as 3409976025 + 7494711184 = 58395^2 + 86572^2 .

It is a cyclic number.

It is not a de Polignac number, because 10904687209 - 2¹⁷ = 10904556137 is a prime.

It is a super-2 number, since 2×10904687209² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10904687239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1972369 + ... + 1977889.

It is an arithmetic number, because the mean of its divisors is an integer number (740127465).

Almost surely, 2^10904687209 is an apocalyptic number.

It is an amenable number.

10904687209 is a deficient number, since it is larger than the sum of its proper divisors (937352231).

10904687209 is a wasteful number, since it uses less digits than its factorization.

10904687209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6780.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 10904687209 in words is "ten billion, nine hundred four million, six hundred eighty-seven thousand, two hundred nine".