9806491854100 has 36 divisors (see below), whose sum is σ = 21280254531228. Its totient is φ = 3922565920000.

The previous prime is 9806491854073. The next prime is 9806491854139. The reversal of 9806491854100 is 14581946089.

It can be written as a sum of positive squares in 6 ways, for example, as 9917371396 + 9796574482704 = 99586^2 + 3129948^2 .

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 15779250 + ... + 16388950.

It is an arithmetic number, because the mean of its divisors is an integer number (591118181423).

Almost surely, 2^{9806491854100} is an apocalyptic number.

It is an amenable number.

9806491854100 is an abundant number, since it is smaller than the sum of its proper divisors (11473762677128).

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

9806491854100 is a wasteful number, since it uses less digits than its factorization.

9806491854100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770556 (or 770549 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 9806491854100 in words is "nine trillion, eight hundred six billion, four hundred ninety-one million, eight hundred fifty-four thousand, one hundred".