102207923861 has 2 divisors, whose sum is σ = 102207923862. Its totient is φ = 102207923860.

The previous prime is 102207923849. The next prime is 102207923897. The reversal of 102207923861 is 168329702201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98059791025 + 4148132836 = 313145^2 + 64406^2 .

It is a cyclic number.

It is not a de Polignac number, because 102207923861 - 2¹⁰ = 102207922837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102207928861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51103961930 + 51103961931.

It is an arithmetic number, because the mean of its divisors is an integer number (51103961931).

Almost surely, 2^102207923861 is an apocalyptic number.

It is an amenable number.

102207923861 is a deficient number, since it is larger than the sum of its proper divisors (1).

102207923861 is an equidigital number, since it uses as much as digits as its factorization.

102207923861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 102207923861 in words is "one hundred two billion, two hundred seven million, nine hundred twenty-three thousand, eight hundred sixty-one".