102643678105 has 8 divisors (see below), whose sum is σ = 123195336264. Its totient is φ = 82099660800.

The previous prime is 102643678069. The next prime is 102643678117. The reversal of 102643678105 is 501876346201.

It can be written as a sum of positive squares in 4 ways, for example, as 6828047424 + 95815630681 = 82632^2 + 309541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102643678105 - 2¹⁹ = 102643153817 is a prime.

It is a super-3 number, since 3×102643678105³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1880616 + ... + 1934425.

It is an arithmetic number, because the mean of its divisors is an integer number (15399417033).

Almost surely, 2^102643678105 is an apocalyptic number.

It is an amenable number.

102643678105 is a deficient number, since it is larger than the sum of its proper divisors (20551658159).

102643678105 is an equidigital number, since it uses as much as digits as its factorization.

102643678105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820427.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 102643678105 in words is "one hundred two billion, six hundred forty-three million, six hundred seventy-eight thousand, one hundred five".