7266855648 has 192 divisors, whose sum is σ = 21218041152. Its totient is φ = 2163179520.

The previous prime is 7266855647. The next prime is 7266855667. The reversal of 7266855648 is 8465586627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7266855647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11128090 + ... + 11128742.

It is an arithmetic number, because the mean of its divisors is an integer number (110510631).

Almost surely, 2^7266855648 is an apocalyptic number.

7266855648 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7266855648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10609020576).

7266855648 is an abundant number, since it is smaller than the sum of its proper divisors (13951185504).

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

7266855648 is a wasteful number, since it uses less digits than its factorization.

7266855648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957 (or 949 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 57.

The square root of 7266855648 is about 85245.8541396589. The cubic root of 7266855648 is about 1936.9370705522.

The spelling of 7266855648 in words is "seven billion, two hundred sixty-six million, eight hundred fifty-five thousand, six hundred forty-eight".