102679771393 has 2 divisors, whose sum is σ = 102679771394. Its totient is φ = 102679771392.

The previous prime is 102679771391. The next prime is 102679771451. The reversal of 102679771393 is 393177976201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93640896064 + 9038875329 = 306008^2 + 95073^2 .

It is a cyclic number.

It is not a de Polignac number, because 102679771393 - 2¹ = 102679771391 is a prime.

Together with 102679771391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (102679771391) 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, 51339885696 + 51339885697.

It is an arithmetic number, because the mean of its divisors is an integer number (51339885697).

Almost surely, 2^102679771393 is an apocalyptic number.

It is an amenable number.

102679771393 is a deficient number, since it is larger than the sum of its proper divisors (1).

102679771393 is an equidigital number, since it uses as much as digits as its factorization.

102679771393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000564, while the sum is 55.

The spelling of 102679771393 in words is "one hundred two billion, six hundred seventy-nine million, seven hundred seventy-one thousand, three hundred ninety-three".