10000091000 has 64 divisors (see below), whose sum is σ = 23494030560. Its totient is φ = 3984000000.

The previous prime is 10000090987. The next prime is 10000091021. The reversal of 10000091000 is 19000001.

10000091000 is a modest number, since divided by 91000 gives 10000 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231080 + ... + 270920.

Almost surely, 2^10000091000 is an apocalyptic number.

10000091000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10000091000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11747015280).

10000091000 is an abundant number, since it is smaller than the sum of its proper divisors (13493939560).

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

10000091000 is a wasteful number, since it uses less digits than its factorization.

10000091000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40113 (or 40099 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 11.

Adding to 10000091000 its reverse (19000001), we get a palindrome (10019091001).

The spelling of 10000091000 in words is "ten billion, ninety-one thousand".