100449879656559 has 16 divisors (see below), whose sum is σ = 133972149696000. Its totient is φ = 66947099008896.

The previous prime is 100449879656537. The next prime is 100449879656563. The reversal of 100449879656559 is 955656978944001.

It is a happy number.

It is not a de Polignac number, because 100449879656559 - 2⁹ = 100449879656047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100449879656359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510579792 + ... + 510776490.

It is an arithmetic number, because the mean of its divisors is an integer number (8373259356000).

Almost surely, 2^{100449879656559} is an apocalyptic number.

100449879656559 is a deficient number, since it is larger than the sum of its proper divisors (33522270039441).

100449879656559 is a wasteful number, since it uses less digits than its factorization.

100449879656559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245374.

The product of its (nonzero) digits is 2939328000, while the sum is 78.

The spelling of 100449879656559 in words is "one hundred trillion, four hundred forty-nine billion, eight hundred seventy-nine million, six hundred fifty-six thousand, five hundred fifty-nine".