9994531591170 has 512 divisors, whose sum is σ = 33701228789760. Its totient is φ = 2053685145600.

The previous prime is 9994531591151. The next prime is 9994531591217. The reversal of 9994531591170 is 711951354999.

9994531591170 is a `hidden beast` number, since 9 + 9 + 9 + 4 + 5 + 31 + 591 + 1 + 7 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 9994531591098 and 9994531591107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 541670445 + ... + 541688895.

It is an arithmetic number, because the mean of its divisors is an integer number (65822712480).

Almost surely, 2^{9994531591170} is an apocalyptic number.

9994531591170 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9994531591170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16850614394880).

9994531591170 is an abundant number, since it is smaller than the sum of its proper divisors (23706697198590).

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

9994531591170 is a wasteful number, since it uses less digits than its factorization.

9994531591170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19247 (or 19241 counting only the distinct ones).

The product of its (nonzero) digits is 13778100, while the sum is 63.

The spelling of 9994531591170 in words is "nine trillion, nine hundred ninety-four billion, five hundred thirty-one million, five hundred ninety-one thousand, one hundred seventy".