10000091816 has 64 divisors (see below), whose sum is σ = 22091469120. Its totient is φ = 4183787520.

The previous prime is 10000091743. The next prime is 10000091819. The reversal of 10000091816 is 61819000001.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (10000091819) 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 15 ways as a sum of consecutive naturals, for example, 391451 + ... + 416213.

It is an arithmetic number, because the mean of its divisors is an integer number (345179205).

Almost surely, 2^10000091816 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 10000091816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11045734560).

10000091816 is an abundant number, since it is smaller than the sum of its proper divisors (12091377304).

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

10000091816 is a wasteful number, since it uses less digits than its factorization.

10000091816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25146 (or 25142 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 26.

Adding to 10000091816 its reverse (61819000001), we get a palindrome (71819091817).

The spelling of 10000091816 in words is "ten billion, ninety-one thousand, eight hundred sixteen".