7154521344 has 180 divisors, whose sum is σ = 21559480404. Its totient is φ = 2359590912.

The previous prime is 7154521343. The next prime is 7154521379. The reversal of 7154521344 is 4431254517.

7154521344 is a `hidden beast` number, since 71 + 5 + 452 + 134 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1928966400 + 5225554944 = 43920^2 + 72288^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7154521299 and 7154521308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7154521343) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 2009614 + ... + 2013170.

Almost surely, 2^7154521344 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 7154521344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10779740202).

7154521344 is an abundant number, since it is smaller than the sum of its proper divisors (14404959060).

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

7154521344 is an equidigital number, since it uses as much as digits as its factorization.

7154521344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682 (or 3659 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 7154521344 is about 84584.4036687615. The cubic root of 7154521344 is about 1926.9045158934.

The spelling of 7154521344 in words is "seven billion, one hundred fifty-four million, five hundred twenty-one thousand, three hundred forty-four".