102103825861 has 2 divisors, whose sum is σ = 102103825862. Its totient is φ = 102103825860.

The previous prime is 102103825847. The next prime is 102103825877. The reversal of 102103825861 is 168528301201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88536002500 + 13567823361 = 297550^2 + 116481^2 .

It is a cyclic number.

It is not a de Polignac number, because 102103825861 - 2⁵ = 102103825829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102103825861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102103826861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51051912930 + 51051912931.

It is an arithmetic number, because the mean of its divisors is an integer number (51051912931).

Almost surely, 2^102103825861 is an apocalyptic number.

It is an amenable number.

102103825861 is a deficient number, since it is larger than the sum of its proper divisors (1).

102103825861 is an equidigital number, since it uses as much as digits as its factorization.

102103825861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 102103825861 in words is "one hundred two billion, one hundred three million, eight hundred twenty-five thousand, eight hundred sixty-one".