4247911997784 has 256 divisors, whose sum is σ = 14525604172800. Its totient is φ = 1120110280704.

The previous prime is 4247911997761. The next prime is 4247911997867. The reversal of 4247911997784 is 4877991197424.

4247911997784 is a `hidden beast` number, since 4 + 2 + 479 + 1 + 1 + 9 + 9 + 77 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 117662424 + ... + 117698520.

It is an arithmetic number, because the mean of its divisors is an integer number (56740641300).

Almost surely, 2^{4247911997784} 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 4247911997784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7262802086400).

4247911997784 is an abundant number, since it is smaller than the sum of its proper divisors (10277692175016).

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

4247911997784 is a wasteful number, since it uses less digits than its factorization.

4247911997784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42119 (or 42109 counting only the distinct ones).

The product of its digits is 256048128, while the sum is 72.

The spelling of 4247911997784 in words is "four trillion, two hundred forty-seven billion, nine hundred eleven million, nine hundred ninety-seven thousand, seven hundred eighty-four".