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100000000091 is a prime number
BaseRepresentation
bin101110100100001110…
…1101110100001011011
3100120010011122100101002
41131020131232201123
53114300000000331
6113534523015215
710140043655525
oct1351035564133
9316104570332
10100000000091
1139456436182
121746996a50b
13957880c7b4
144ba9060a15
1529042399cb
hex174876e85b

100000000091 has 2 divisors, whose sum is σ = 100000000092. Its totient is φ = 100000000090.

The previous prime is 100000000073. The next prime is 100000000103. The reversal of 100000000091 is 190000000001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100000000091 - 230 = 98926258267 is a prime.

It is not a weakly prime, because it can be changed into another prime (100000009091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000000045 + 50000000046.

It is an arithmetic number, because the mean of its divisors is an integer number (50000000046).

Almost surely, 2100000000091 is an apocalyptic number.

100000000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000000091 is an equidigital number, since it uses as much as digits as its factorization.

100000000091 is an evil number, because the sum of its binary digits is even.

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

Adding to 100000000091 its reverse (190000000001), we get a palindrome (290000000092).

The spelling of 100000000091 in words is "one hundred billion, ninety-one", and thus it is an aban number.