100185869508 has 12 divisors (see below), whose sum is σ = 233767028880. Its totient is φ = 33395289832.

The previous prime is 100185869479. The next prime is 100185869569. The reversal of 100185869508 is 805968581001.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4174411218 + ... + 4174411241.

It is an arithmetic number, because the mean of its divisors is an integer number (19480585740).

Almost surely, 2^100185869508 is an apocalyptic number.

It is an amenable number.

100185869508 is an abundant number, since it is smaller than the sum of its proper divisors (133581159372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100185869508 is a wasteful number, since it uses less digits than its factorization.

100185869508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8348822466 (or 8348822464 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 51.

The spelling of 100185869508 in words is "one hundred billion, one hundred eighty-five million, eight hundred sixty-nine thousand, five hundred eight".