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99999199999 is a prime number
BaseRepresentation
bin101110100100001101…
…0101011001011111111
3100120010010010200212001
41131020122223023333
53114244243344444
6113534453523131
710140034114066
oct1351032531377
9316103120761
1099999199999
1139455a3a046
12174696434a7
1395785bc57a
144ba8cd31dd
15290412c8d4
hex17486ab2ff

99999199999 has 2 divisors, whose sum is σ = 99999200000. Its totient is φ = 99999199998.

The previous prime is 99999199987. The next prime is 99999200003.

99999199999 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 99999199999 - 213 = 99999191807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99999199919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999599999 + 49999600000.

It is an arithmetic number, because the mean of its divisors is an integer number (49999600000).

Almost surely, 299999199999 is an apocalyptic number.

99999199999 is a deficient number, since it is larger than the sum of its proper divisors (1).

99999199999 is an equidigital number, since it uses as much as digits as its factorization.

99999199999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3486784401, while the sum is 91.

The spelling of 99999199999 in words is "ninety-nine billion, nine hundred ninety-nine million, one hundred ninety-nine thousand, nine hundred ninety-nine".