100987543124 has 24 divisors (see below), whose sum is σ = 192284776488. Its totient is φ = 46129121280.

The previous prime is 100987543123. The next prime is 100987543127. The reversal of 100987543124 is 421345789001.

It can be written as a sum of positive squares in 4 ways, for example, as 3056099524 + 97931443600 = 55282^2 + 312940^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100987543123) 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 7 ways as a sum of consecutive naturals, for example, 10005617 + ... + 10015704.

It is an arithmetic number, because the mean of its divisors is an integer number (8011865687).

Almost surely, 2^100987543124 is an apocalyptic number.

It is an amenable number.

100987543124 is a deficient number, since it is larger than the sum of its proper divisors (91297233364).

100987543124 is a wasteful number, since it uses less digits than its factorization.

100987543124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20021435 (or 20021433 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 100987543124 in words is "one hundred billion, nine hundred eighty-seven million, five hundred forty-three thousand, one hundred twenty-four".