9861990187301 has 64 divisors (see below), whose sum is σ = 11800293373440. Its totient is φ = 8067664281600.

The previous prime is 9861990187277. The next prime is 9861990187349. The reversal of 9861990187301 is 1037810991689.

It is not a de Polignac number, because 9861990187301 - 2¹⁴ = 9861990170917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9861990187391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1561179395 + ... + 1561185711.

It is an arithmetic number, because the mean of its divisors is an integer number (184379583960).

Almost surely, 2^{9861990187301} is an apocalyptic number.

It is an amenable number.

9861990187301 is a deficient number, since it is larger than the sum of its proper divisors (1938303186139).

9861990187301 is a wasteful number, since it uses less digits than its factorization.

9861990187301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7134.

The product of its (nonzero) digits is 5878656, while the sum is 62.

The spelling of 9861990187301 in words is "nine trillion, eight hundred sixty-one billion, nine hundred ninety million, one hundred eighty-seven thousand, three hundred one".