7321479648 has 144 divisors (see below), whose sum is σ = 22415826384. Its totient is φ = 2086318080.

The previous prime is 7321479647. The next prime is 7321479679. The reversal of 7321479648 is 8469741237.

It is a self number, because there is not a number n which added to its sum of digits gives 7321479648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7321479643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1978536 + ... + 1982232.

It is an arithmetic number, because the mean of its divisors is an integer number (155665461).

Almost surely, 2^7321479648 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 7321479648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11207913192).

7321479648 is an abundant number, since it is smaller than the sum of its proper divisors (15094346736).

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

7321479648 is a wasteful number, since it uses less digits than its factorization.

7321479648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4145 (or 4130 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 51.

The square root of 7321479648 is about 85565.6452555580. The cubic root of 7321479648 is about 1941.7781946077.

The spelling of 7321479648 in words is "seven billion, three hundred twenty-one million, four hundred seventy-nine thousand, six hundred forty-eight".