104251899889 has 2 divisors, whose sum is σ = 104251899890. Its totient is φ = 104251899888.

The previous prime is 104251899803. The next prime is 104251899943. The reversal of 104251899889 is 988998152401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103834106289 + 417793600 = 322233^2 + 20440^2 .

It is a cyclic number.

It is not a de Polignac number, because 104251899889 - 2⁹ = 104251899377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104251899889.

It is not a weakly prime, because it can be changed into another prime (104251899289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52125949944 + 52125949945.

It is an arithmetic number, because the mean of its divisors is an integer number (52125949945).

Almost surely, 2^104251899889 is an apocalyptic number.

It is an amenable number.

104251899889 is a deficient number, since it is larger than the sum of its proper divisors (1).

104251899889 is an equidigital number, since it uses as much as digits as its factorization.

104251899889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14929920, while the sum is 64.

The spelling of 104251899889 in words is "one hundred four billion, two hundred fifty-one million, eight hundred ninety-nine thousand, eight hundred eighty-nine".