9718721149320 has 112 divisors (see below), whose sum is σ = 32785685950860. Its totient is φ = 2591658965376.

The previous prime is 9718721149243. The next prime is 9718721149393. The reversal of 9718721149320 is 239411278179.

9718721149320 is a `hidden beast` number, since 9 + 71 + 8 + 72 + 11 + 493 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8396630517636 + 1322090631684 = 2897694^2 + 1149822^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 27 ways as a sum of consecutive naturals, for example, 166615579 + ... + 166673898.

Almost surely, 2^{9718721149320} is an apocalyptic number.

9718721149320 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9718721149320 is an abundant number, since it is smaller than the sum of its proper divisors (23066964801540).

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

9718721149320 is a wasteful number, since it uses less digits than its factorization.

9718721149320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333289506 (or 333289487 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 9718721149320 in words is "nine trillion, seven hundred eighteen billion, seven hundred twenty-one million, one hundred forty-nine thousand, three hundred twenty".