102103826861 has 2 divisors, whose sum is σ = 102103826862. Its totient is φ = 102103826860.

The previous prime is 102103826753. The next prime is 102103826897. The reversal of 102103826861 is 168628301201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100873571236 + 1230255625 = 317606^2 + 35075^2 .

It is an emirp because it is prime and its reverse (168628301201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102103826861 - 2²⁶ = 102036717997 is a prime.

It is a super-2 number, since 2×102103826861² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102103825861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51051913430 + 51051913431.

It is an arithmetic number, because the mean of its divisors is an integer number (51051913431).

Almost surely, 2^102103826861 is an apocalyptic number.

It is an amenable number.

102103826861 is a deficient number, since it is larger than the sum of its proper divisors (1).

102103826861 is an equidigital number, since it uses as much as digits as its factorization.

102103826861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 102103826861 in words is "one hundred two billion, one hundred three million, eight hundred twenty-six thousand, eight hundred sixty-one".