10999321806 has 48 divisors (see below), whose sum is σ = 25453008000. Its totient is φ = 3157696080.

The previous prime is 10999321741. The next prime is 10999321807. The reversal of 10999321806 is 60812399901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10999321807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 384906 + ... + 412493.

It is an arithmetic number, because the mean of its divisors is an integer number (530271000).

Almost surely, 2^10999321806 is an apocalyptic number.

10999321806 is an abundant number, since it is smaller than the sum of its proper divisors (14453686194).

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

10999321806 is a wasteful number, since it uses less digits than its factorization.

10999321806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797445 (or 797434 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The spelling of 10999321806 in words is "ten billion, nine hundred ninety-nine million, three hundred twenty-one thousand, eight hundred six".