9818278920001 has 32 divisors (see below), whose sum is σ = 10648241493120. Its totient is φ = 9031975411200.

The previous prime is 9818278919963. The next prime is 9818278920031. The reversal of 9818278920001 is 1000298728189.

It is a de Polignac number, because none of the positive numbers 2^k-9818278920001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9818278920031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 444435966 + ... + 444458056.

It is an arithmetic number, because the mean of its divisors is an integer number (332757546660).

Almost surely, 2^{9818278920001} is an apocalyptic number.

It is an amenable number.

9818278920001 is a deficient number, since it is larger than the sum of its proper divisors (829962573119).

9818278920001 is a wasteful number, since it uses less digits than its factorization.

9818278920001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30897.

The product of its (nonzero) digits is 1161216, while the sum is 55.

The spelling of 9818278920001 in words is "nine trillion, eight hundred eighteen billion, two hundred seventy-eight million, nine hundred twenty thousand, one".