100318808561 has 8 divisors (see below), whose sum is σ = 100618900584. Its totient is φ = 100018955520.

The previous prime is 100318808531. The next prime is 100318808573. The reversal of 100318808561 is 165808813001.

It can be written as a sum of positive squares in 4 ways, for example, as 48206593600 + 52112214961 = 219560^2 + 228281^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 100318808561 - 2¹⁴ = 100318792177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100318808531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799451 + ... + 916383.

It is an arithmetic number, because the mean of its divisors is an integer number (12577362573).

Almost surely, 2^100318808561 is an apocalyptic number.

It is an amenable number.

100318808561 is a deficient number, since it is larger than the sum of its proper divisors (300092023).

100318808561 is a wasteful number, since it uses less digits than its factorization.

100318808561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119491.

The product of its (nonzero) digits is 46080, while the sum is 41.

The spelling of 100318808561 in words is "one hundred billion, three hundred eighteen million, eight hundred eight thousand, five hundred sixty-one".