9209037666864 has 160 divisors (see below), whose sum is σ = 27494280253440. Its totient is φ = 2601648112896.

The previous prime is 9209037666863. The next prime is 9209037666931. The reversal of 9209037666864 is 4686667309029.

It is a junction number, because it is equal to n+sod(n) for n = 9209037666795 and 9209037666804.

It is not an unprimeable number, because it can be changed into a prime (9209037666863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22604779 + ... + 23008565.

It is an arithmetic number, because the mean of its divisors is an integer number (171839251584).

Almost surely, 2^{9209037666864} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9209037666864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13747140126720).

9209037666864 is an abundant number, since it is smaller than the sum of its proper divisors (18285242586576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9209037666864 is a wasteful number, since it uses less digits than its factorization.

9209037666864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404567 (or 404561 counting only the distinct ones).

The product of its (nonzero) digits is 141087744, while the sum is 66.

The spelling of 9209037666864 in words is "nine trillion, two hundred nine billion, thirty-seven million, six hundred sixty-six thousand, eight hundred sixty-four".