7447831168 has 48 divisors (see below), whose sum is σ = 15191041050. Its totient is φ = 3637197312.

The previous prime is 7447831159. The next prime is 7447831213. The reversal of 7447831168 is 8611387447.

It can be written as a sum of positive squares in only one way, i.e., 6424343104 + 1023488064 = 80152^2 + 31992^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 220938 + ... + 252406.

Almost surely, 2^7447831168 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 7447831168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7595520525).

7447831168 is an abundant number, since it is smaller than the sum of its proper divisors (7743209882).

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

7447831168 is an equidigital number, since it uses as much as digits as its factorization.

7447831168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31569 (or 31514 counting only the distinct ones).

The product of its digits is 903168, while the sum is 49.

The square root of 7447831168 is about 86300.8178872020. The cubic root of 7447831168 is about 1952.8847216763.

The spelling of 7447831168 in words is "seven billion, four hundred forty-seven million, eight hundred thirty-one thousand, one hundred sixty-eight".