947159478720 has 2016 divisors, whose sum is σ = 4448927246400. Its totient is φ = 182598893568.

The previous prime is 947159478697. The next prime is 947159478731. The reversal of 947159478720 is 27874951749.

947159478720 is a `hidden beast` number, since 9 + 4 + 7 + 159 + 478 + 7 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2016).

It is a super-2 number, since 2×947159478720² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1010842092 + ... + 1010843028.

It is an arithmetic number, because the mean of its divisors is an integer number (2206809150).

Almost surely, 2^947159478720 is an apocalyptic number.

947159478720 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 947159478720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2224463623200).

947159478720 is an abundant number, since it is smaller than the sum of its proper divisors (3501767767680).

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

947159478720 is a wasteful number, since it uses less digits than its factorization.

947159478720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 35562240, while the sum is 63.

The spelling of 947159478720 in words is "nine hundred forty-seven billion, one hundred fifty-nine million, four hundred seventy-eight thousand, seven hundred twenty".