9747247271680 has 144 divisors (see below), whose sum is σ = 23753934338400. Its totient is φ = 3831187783680.

The previous prime is 9747247271647. The next prime is 9747247271689. The reversal of 9747247271680 is 861727427479.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9747247271689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79502266 + ... + 79624774.

It is an arithmetic number, because the mean of its divisors is an integer number (164957877350).

Almost surely, 2^{9747247271680} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9747247271680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11876967169200).

9747247271680 is an abundant number, since it is smaller than the sum of its proper divisors (14006687066720).

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

9747247271680 is a wasteful number, since it uses less digits than its factorization.

9747247271680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123610 (or 123596 counting only the distinct ones).

The product of its (nonzero) digits is 66382848, while the sum is 64.

The spelling of 9747247271680 in words is "nine trillion, seven hundred forty-seven billion, two hundred forty-seven million, two hundred seventy-one thousand, six hundred eighty".