102447702817 has 4 divisors (see below), whose sum is σ = 105752467456. Its totient is φ = 99142938180.

The previous prime is 102447702793. The next prime is 102447702839. The reversal of 102447702817 is 718207744201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 718207744201 = 71 ⋅10115602031.

It is a cyclic number.

It is not a de Polignac number, because 102447702817 - 2¹⁹ = 102447178529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102447702857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1652382273 + ... + 1652382334.

It is an arithmetic number, because the mean of its divisors is an integer number (26438116864).

Almost surely, 2^102447702817 is an apocalyptic number.

It is an amenable number.

102447702817 is a deficient number, since it is larger than the sum of its proper divisors (3304764639).

102447702817 is an equidigital number, since it uses as much as digits as its factorization.

102447702817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304764638.

The product of its (nonzero) digits is 175616, while the sum is 43.

The spelling of 102447702817 in words is "one hundred two billion, four hundred forty-seven million, seven hundred two thousand, eight hundred seventeen".