10909800091 has 4 divisors (see below), whose sum is σ = 10910026152. Its totient is φ = 10909574032.

The previous prime is 10909800053. The next prime is 10909800103. The reversal of 10909800091 is 19000890901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10909800091 - 2¹³ = 10909791899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10909800091.

It is not an unprimeable number, because it can be changed into a prime (10909800001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8281 + ... + 147946.

It is an arithmetic number, because the mean of its divisors is an integer number (2727506538).

Almost surely, 2^10909800091 is an apocalyptic number.

10909800091 is a deficient number, since it is larger than the sum of its proper divisors (226061).

10909800091 is an equidigital number, since it uses as much as digits as its factorization.

10909800091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226060.

The product of its (nonzero) digits is 5832, while the sum is 37.

The spelling of 10909800091 in words is "ten billion, nine hundred nine million, eight hundred thousand, ninety-one".