102839241861 has 6 divisors (see below), whose sum is σ = 148545571590. Its totient is φ = 68559494568.

The previous prime is 102839241833. The next prime is 102839241929. The reversal of 102839241861 is 168142938201.

102839241861 is a `hidden beast` number, since 10 + 2 + 83 + 92 + 418 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 82042717761 + 20796524100 = 286431^2 + 144210^2 .

It is not a de Polignac number, because 102839241861 - 2⁵ = 102839241829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102839241761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5713291206 + ... + 5713291223.

It is an arithmetic number, because the mean of its divisors is an integer number (24757595265).

Almost surely, 2^102839241861 is an apocalyptic number.

It is an amenable number.

102839241861 is a deficient number, since it is larger than the sum of its proper divisors (45706329729).

102839241861 is a wasteful number, since it uses less digits than its factorization.

102839241861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11426582435 (or 11426582432 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 102839241861 in words is "one hundred two billion, eight hundred thirty-nine million, two hundred forty-one thousand, eight hundred sixty-one".