10000909091 has 2 divisors, whose sum is σ = 10000909092. Its totient is φ = 10000909090.

The previous prime is 10000909081. The next prime is 10000909097. The reversal of 10000909091 is 19090900001.

It is a strong prime.

It is an emirp because it is prime and its reverse (19090900001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10000909091 is a prime.

It is not a weakly prime, because it can be changed into another prime (10000909097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000454545 + 5000454546.

It is an arithmetic number, because the mean of its divisors is an integer number (5000454546).

Almost surely, 2^10000909091 is an apocalyptic number.

10000909091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10000909091 is an equidigital number, since it uses as much as digits as its factorization.

10000909091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 29.

The spelling of 10000909091 in words is "ten billion, nine hundred nine thousand, ninety-one".